1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x256af543e34b96d3b49204ee7870877baf4f1cf3a59b5e526925437921cc9722. Chain 2 (Bitcoin): anchored in block 953610 (2026-06-14T07:58:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/14bb9292-2339-45ac-a0ce-aa144b2e1eb0.json and https://artists.proofprofile.net/proofs/artist/14bb9292-2339-45ac-a0ce-aa144b2e1eb0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Holst: The Planets and Other Unearthly Music
Haydn: Symphonies No. 100 "Military" and No. 101 "The Clock"
Handel: Water Music and Music for Royal Fireworks
Vivaldi: The Four Seasons (Le Quattro Stagioni) and Oboe Concerto
Johann Strauss II: A Viennese Garland - A Garden of Waltzes
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc4694639c1eb7c795a7b42e2efbe939952531af347ed3d6e7b28a5e4af77ee. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB790301032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47aeb7cb5418f72182679325d65592810a0f3aef9a6e9db31087cac69be336a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB790301028.
The Huntsman's Polka - French Polka, Op. 229
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b342de1aeb7fceaadf4363ccc166bc835a2b5695cb35a7d3781bcff183b76fa. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB790300561.
Concert Series: Bruch - Violin Concerto No.1 in G minor and Mendelssohn - Violin Concerto in E minor
Solomon, HWV 67: The Arrival of the Queen of Sheba
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A Midsummer Night's Dream, Op. 61: IX. Wedding March
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Music for the Royal Fireworks, HWV 351: III. La réjouissance
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8592990d824afc089ea0d0c27d04c50e71dfd3d6fa451a8357c524ad46ef3985. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEWDL6009750.
Motet in D Major for Choir and Orchestra, K. 618: Ave verum corpus
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An der schönen blauen Donau (On the Beautiful Blue Danube), Op. 314
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La traviata, Act 1: "Libiamo, ne' lieti calici" (Live)
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Così fan tutte, K. 588, Act 1: "Soave sia il vento"
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Carnival of the Animals: The Swan (Le Cygne)
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Suite from "The Gadfly", Op. 97a: VIII. Romance
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Concerto No. 2 in C Minor for Piano and Orchestra, Op. 18: II. Adagio sostenuto
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Concerto in A Major for Clarinet and Orchestra, K. 622: II. Adagio
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04cd07f4d21c9665f1c5806611a933b519fea73e3ea733ffb6e49fdd5f712a96. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEWDL0535207.
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The 99 Most Essential Pieces of the Romantic Era
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Coppélia, Act 3: Valse des heures (Waltz of the Hours)
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Joseph Haydn: The Essential Works - 200 Year Anniversary Collection
Symphony No. 101 in D Major, Hob. I:101, "The Clock": II. Andante
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Symphony No. 101 in D Major, Hob. I:101, "The Clock": III. Minueto
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Canon and Gigue in D Major, P. 37: I. Canon
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Carmina Burana, Fortuna Imperatrix Mundi: No. 1, O Fortuna
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Christmas Concerto in G Minor, Op. 6 No. 8: IV. Vivace - Allegro - Largo
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Swedish Rhapsody No. 1, Op. 19 "Midsommarvaka"
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Classical Music from Ingmar Bergman Films
The Four Seasons (Le quattro stagioni), Op. 8 - Violin Concerto No. 1 in E Major, RV 269, "Spring" (La primavera): I. Allegro
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The Four Seasons (Le quattro stagioni), Op. 8 - Violin Concerto No. 1 in E Major, RV 269, "Spring" (La primavera): II. Largo e pianissimo sempre
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The Four Seasons (Le quattro stagioni), Op. 8 - Violin Concerto No. 1 in E Major, RV 269, "Spring" (La primavera): III. Danza pastorale: Allegro
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Two Elegiac Melodies, Op. 34: II. Last Spring
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Symphony No. 1 in B-Flat Major, Op. 38, "Spring": I. Andante - Allegro
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The Planets, Op. 32: Jupiter, the Bringer of Jollity
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Wilhelm Tell (William Tell): Overture (excerpt)
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Impromptu No. 3 in G-Flat Major, D. 899, Op. 90
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Le nozze di Figaro (The Marriage of Figaro), K. 492: Overture
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Tritsch-Tratsch-Polka (Gossip Polka), Op. 214
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Die Zauberflöte (The Magic Flute), K. 620: Overture
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Symphony No. 6 in F Major, Op. 68, "Pastoral": I. Awakening of Happy Feelings upon Arrival in the Country: Allegro ma non troppo
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Serenade No. 13 in G Major, K. 525, "Eine Kleine Nachtmusik": Allegro
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Baal Shem (version for Violin and orchestra): III. Simchas Torah (Rejoicing)
Orquestra Sinfônica do Estado de São Paulo
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The Drottningholm Music: I. Allegro assai
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The 99 Most Essential Masterpieces of the Classical Era
Concerto No. 3 in G Major for Violin and Orchestra, K. 216: II. Adagio
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Sonata in G Major for Viola da gamba and Lute: I. Allegro - II. Adagio - III. Minuetto
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Sonata No. 14 in C-Sharp Minor for Piano, Op. 27:2, "Moonlight": III. Presto agitato
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Le quattro stagioni (The Four Seasons), Op. 8 - Concerto No. 1 in E Major, RV 269, "La primavera" (Spring): I. Allegro
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Le quattro stagioni (The Four Seasons), Op. 8 - Concerto No. 4 in F Minor, RV 297, "L'inverno" (Winter): II. Largo
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Le quattro stagioni (The Four Seasons), Op. 8 - Concerto No. 3 in F Major, RV 293, "L'autunno" (Autumn): I. Ballo e canto de villanelli: Allegro
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Concerto for 2 Mandolins in G major, RV. 532 - II. Andante
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L'estro armonico, Op. 3 - Concerto No. 8 in A Minor for Two Violins and Strings, RV 522: I. Allegro
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Concerto in D Major for Guitar and Strings, RV 93: I. Allegro giusto
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Concerto in A Minor for Bassoon and Orchestra, RV 497: III. Allegro
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Concerto in C Major for Guitar and Orchestra, RV 425: I. Allegro
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Concerto in C Major for Sopranino Recorder, Strings and B.C, RV 444: II. Largo
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Concerto No. 8 in A Minor for Oboe and Orchestra, RV 461: III. Allegro
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The 99 Most Essential Classics of the Romantic Era
Also Sprach Zarathustra, Op. 30: I. Introduction
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Les contes d'Hoffmann, Act III: Belle nuit, ô nuit d'amour "Barcarolle" (Instrumental Version)
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Nocturnes, Op. 9: No. 2, Andante in E-Flat Major
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Romeo and Juliet, Fantasy Overture, Op. 64a
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Suite bergamasque, L. 75: III. Clair de lune
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L'Arlesienne Suite No. 1, WD 40: I. Prelude
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My Fatherland, JB 1:112 "Ma Vlast": II. Vltava (The Moldau River)
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Cello Concerto in E Minor, Op. 85: I. Adagio - Moderato
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Peer Gynt Suite No. 1, Op. 46: I. Morning Mood
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Peer Gynt Suite No. 1, Op. 46: IV. In the Hall of the Mountain King
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Peer Gynt, Op. 23, Act III: No. 13, Solveig's Song
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Slavonic Dances, Op. 72: No. 2, Dumka (Allegretto grazioso)
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Two Elegiac Melodies, Op. 34: II. The Last Spring
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Piano Concerto No. 1 in B-Flat Minor, Op. 23: I. Allegro non troppo e molto maestoso - Allegro con spirito
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The Nutcracker, Op. 71, Act I: II. March
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The Nutcracker, Op. 71, Act II: XIV. Waltz of the Flowers
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The Nutcracker, Op. 71, Act II: XIId. Trepak (Russian Dance)
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The Nutcracker, Op. 71, Act II: XIVc. Var. 2, Dance of the Sugar-Plum Fairy
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5 Morceaux de fantasie, Op. 3: No. 2, Prélude in C-Sharp Minor "The Bells of Moscow"
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21 Hungarian Dances, WoO 1: No. 5, Allegro in F-Sharp Minor
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Die Walkürie, WWV 86b, Act III: Ride of the Valkyries
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Messa da Requiem: II. Sequence, No. 1, Dies irae - Tuba mirum
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Symphony No. 9 in E Minor, Op. 95 "From the New World": II. Largo
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Nabucco, Act III: Chorus of the Hebrew Slaves "Va pensiero, sull'ali dorate"
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Symphony No. 40 in G Minor, K. 550: Allegro molto
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Concerto No. 21 in C Major for Piano and Orchestra, K. 467: Andante
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Sonata No. 11 in A Major for Piano, K. 331: Rondo "Alla turca"
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Die Zauberflöte (The Magic Flute), K. 620, Act 2: "Der Hölle Rache kocht in meinem Herzen" (Queen of the Night's Aria)
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Symphony No. 25 in G Minor, K. 183: I. Allegro con brio
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Requiem Mass in D Minor, K. 626: II. Dies irae
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Concerto No. 5 in A Major for Violin and Orchestra, K. 219: Allegro aperto
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Sonata No. 12 in F Major for Piano, K. 332: Adagio
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Don Giovanni (Don Juan), K. 527: Overture
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Concerto No. 26 in D Major for Piano and Orchestra, K. 537, "Coronation": II. Romanza: (Larghetto con moto)
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Serenade No. 10 in B-Flat Major, K. 361, "Gran Partita": III. Adagio
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Andante in C Major for Flute and Orchestra, K. 315
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Concerto No. 20 in D Minor for Piano and Orchestra, K. 466: II. Romance
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Sonata No. 16 in C Major for Piano, K. 545, "Sonata facile": I. Allegro
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Symphony No. 41 in C Major, K. 551 "Jupiter": IV. Finale: Molto allegro
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Rhapsody on a Theme of Paganini, Op. 43: Variation 18: Andante cantabile
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The Best Relaxing Music of the Romantic Era
Peer Gynt Suite No. 1, Op. 46: Morning Mood
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Easter Oratorio, BWV 249: II. Adagio in B Minor
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Classical Masterpieces as Heard in Cartoons
William Tell Overture (Mickey Mouse and Friends - The Band Concert 1935)
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Hungarian Dance No. 5 in G Minor (Looney Tunes - Pigs in a Polka 1943)
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Die Fledermaus (The Bat): Overture (Tom and Jerry - The Hollywood Bowl 1950)
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The Blue Danube (Waltz), Op. 314 (Tom & Jerry - A Corny Concerto 1943)
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Orchestral Suite No. 3 in D Major, BWV 1068: II. Air
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Piano Concerto No. 5 in F Minor, BWV 1056: II. Arioso: Largo
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Kinderszenen, Op. 15: IV. Bittendes Kind
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Scheherazade, Op. 35: III. The Young Prince And The Young Princess, Andantino quasi Allegretto
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The Sleeping Beauty, Op. 66: Pas de six, Var. 3, Miettes qui tombent
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The Nutcracker, Op. 71, Act I: VI. Scene, Dance of the Grandfathers (attacca)
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The Sleeping Beauty, Op. 66: Pas de six, Var. 1, Candide
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Piano Sonata No. 11 in A Major, K. 331 "Turkish March": I. Tema con variazione
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Jeux d'enfants, Op. 22: III. La poupée (Andantino quasi andante)
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The Nutcracker, Op. 71, Act I: VIII. Scene, A Pine Forest in Winter
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Kinderszenen, Op. 15: XII. Kind im Einschlummern
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100 Pieces of Classical Music For Your Brain
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Partita No. 2 in D Minor for Solo Violin, BWV 1004: V. Chaconne
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Bagatelle in A Minor, WoO 59, "Für Elise"
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L'Estro Armonico, Op. 3 - Concerto No. 9 in D Major for Violin and Strings, RV 230: I. Allegro
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Three Nocturnes for Piano, Op. 62: Liebestraum No. 3 in A-Flat Major, G 541: "O lieb so lang' Du lieben kannst": Poco allegro con affetto
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Concerto in A Minor for Piano and Orchestra, Op. 16: I. Allegro molto moderato
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String Quartet No. 62 in C Major, Op. 76:3, "Emperor": II. Poco adagio: Cantabile
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Prélude à l'après-midi d'un faune (Prelude to a Faun's Afternoon), L 86
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Samson et Dalila, Op. 47, Act 2: "Mon coeur s'ouvre a ta voix"
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Waltz No. 1 in D-Flat Major, Op. 64, "Minute Waltz"
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Concerto in D Major for Violin and Orchestra, Op. 77: III. Allegro giocoso
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Festival Overture in E-Flat Major, "The Year 1812", Op. 49
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Prince Igor, Polovtsian Dances: I. Introduction - Andantino
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Kinderszenen, Op. 15: Träumerei (Orchestra version)
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String Quintet in E Major, Op. 13: Minuet
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Piano Sonata in A major, K. 331 - III. Finale - Rondo a la Turka
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Pavane pour une infante défunte (Pavane for a Dead Princess), M. 19
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Fugue for Solo Guitar in G Minor, BWV 1000
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Sonata No. 8 in C Minor for Piano, Op. 13, "Pathétique": Adagio cantabile
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Concerto No. 1 in E-Flat Major for Piano and Orchestra, S. 124: II. Quasi adagio
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Slåtter (Norwegian Peasant Dances), Op. 72: Bruremarsch fra Telemarken (Bridal March from Telemark)
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Concerto in E-Flat Major for Trumpet and Orchestra, Hob. VIIe: III. Finale: Allegro
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Moments musicaux, D. 780: Air Russe in F Minor: Allegro moderato
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Le carnaval des animaux (The Carnival of the Animals): Le cygne (The Swan)
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Concerto No. 1 in B-Flat Minor for Piano and Orchestra, Op. 23: I. Allegro non troppo e molto maestoso - Allegro con spirito
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String Quartet No. 2 in D Major: IV. Finale: Andante - Vivace
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Fantasy Pieces, Op. 12: Des Abends (The Evening)
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Concerto No. 2 in D Major for Cello and Orchestra, G. 479: III. Allegro vivo
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Pomp and Circumstance, Op. 39: Land of Hope and Glory
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Symphony No. 29 in A Major, K. 201: I. Allegro moderato
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Symphony No. 5 in C Minor, Op. 67, "Fate": Allegro con brio
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Symphony No. 5 in B-Flat Major, D. 485: II. Andante con moto
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Hungarian Rhapsody No. 2 in C-Sharp Minor, S. 359/2
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Symphony No. 100 in G Major, Hob. 1/100, "Military": II. Allegretto
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Orchestral Suite No. 3 in D Major, BWV 1068: Air
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Hungarian Rhapsody No. 2 in C-Sharp Minor, S. 244
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Sonata No. 14 in C-Sharp Minor for Piano, Op. 27:2, "Moonlight": I. Adagio sostenuto
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The Nutcracker, Op. 71a: XVc. Pas de deux - Variation II: Dance of the Sugar-Plum Fairy
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Concerto No. 1 in A Minor for Violin and Strings, BWV 1041: I. Allegro
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Symphony No. 9 in D Minor, Op. 125, "Choral": An die Freude
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Adagio in G Minor for Strings and Organ, "Albinoni's Adagio"
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Carmen, Act 1: "L'amour est un oiseau rebelle" (Habanera)
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Concerto No. 21 in C Major for Piano and Orchestra, K. 467: II. Andante ("Elvira Madigan")
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The Four Seasons (Le Quattro Stagioni) - Concerto for Violin in E Major, RV 269, Op. 8:1, "Spring": I. Allegro
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Swan Lake, Ballet Suite, Op. 20: Scéne (Lake in the Moonlight): Moderato
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Concerto in D Major for Trumpet and Orchestra: I. Adagio
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Concerto in A Minor for Recorder, Two Violins and Continuo: Adagio
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Water Music Suite No. 1 in F Major, HWV 348: II. Adagio e staccato
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Suite for Orchestra No. 3 in D Major, BWV 1068: II. Air
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Sonata No. 14 in C-Sharp Minor for Piano, Op. 27:2, "Moonlight Sonata": Adagio sostenuto
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Concerto in A Minor for Piano and Orchestra, Op. 16: II. Adagio
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Symphony No. 2 in D Major, Op. 73: II. Adagio ma non troppo - L'istesso tempo, ma grazioso
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Concerto No. 1 in G Minor for Violin and Orchestra, Op. 26: II. Adagio
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Symphony No. 2 in E Minor, Op. 27: III. Adagio
Polish National Radio Symphony Orchestra
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The 50 Most Essential Saint-Saëns Masterpieces
Spartacus, Overture in E-Flat Major for Orchestra (1863)
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Le carnaval des animaux (The Carnival of the Animals): XIII. Le cygne (The Swan)
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Allegro appassionato in C-Sharp Minor for Piano and Orchestra, Op. 70
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Concerto No. 3 in B Minor for Violin and Orchestra, Op. 61: I. Allegro non troppo
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Le carnaval des animaux (The Carnival of the Animals): VII. Aquarium
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The 99 Most Essential Vivaldi Masterpieces
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Three Nocturnes for Piano (Liebesträume), S. 541: No. 3 in A-Flat Major, "O lieb so lang, Du lieben kannst": Poco allegro con affetto
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Twelve Variations in C Major on the French song "Ah vous dirai-je, Maman" (Twinkle, twinkle litte Star), K. 265/300e
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The 50 Most Essential Handel Masterpieces
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Evolution of Classical Music: The 18th Century
The Well-Tempered Clavier, Book 1: Prelude and Fugue No. 1 in C Major, BWV 846: I. Prelude
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Quintet No. 4 in D Major, G. 448: IV. Fandango
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The Best Classical Music From Romantic Comedies
Concerto in C Major for Flute, Harp and Orchestra, K. 299: II. Andantino (From Green Card)
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