Béla Viktor János Bartók (; ; 25 March 1881 – 26 September 1945) was a Hungarian composer, pianist and ethnomusicologist. He is considered one of the most important composers of the 20th century; he a
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb554cde8a815da49f58c398ac9f91aa016ad67828af79718a2279c49e6f3d7f4. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/300861da-53d2-4dd5-ac44-549b1277cbb6.json and https://artists.proofprofile.net/proofs/artist/300861da-53d2-4dd5-ac44-549b1277cbb6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mirages. Hidden Treasures of Classical Piano
Klassische Musik für den Sommer - Über das Meer
Esa-Pekka Salonen in Verbier (Bartók: The Miraculous Mandarin – Schumann: Symphonie No. 3 "Rhenish" – Sibelius: Symphonie No. 5) [Live]
Reminiscences. Hidden Treasures of Classical Piano
Bartók: Sonata for Two Pianos and Percussion & Pieces from Mikrokosmos
Lucerne Festival Historic Performances: Rafael Kubelik (Béla Bartók: Herzog Blaubarts Burg, Sz. 48)
Bartok : Contrastes et 44 Duos pour 2 violons
Bartók: Works for Violin and Piano, Vol. 3
Bartok: Viola Concerto / 2 Pictures, Bb 59
Joseph Szigeti Plays Bartók, Bloch, Milhaud, de Falla & Mozart (Remastered)
Bartok : Contrastes 44 duos pour 2 violons
Ferenc Fricsay conducts Béla Bartok - The early RIAS recordings (live and studio recordings from Berlin, 1950-1953)
Bartók: Sonata for 2 Pianos and Percussion, Rhapsody, BB 36b & Scherzo, BB 35
Bartok: Music for Strings, Percussion and Celesta / Violin Concerto No. 1
Bartók: Chamber Works for Violin, Vol. 3
Bartók: Violin Concerto No. 2 in B Major, Sz. 112 & Concerto for Orchestra, Sz. 116
Bartók: 44 Duos for 2 Violins, Sz. 98 - Vivaldi: Sonata in F Major, RV 70
Bartók: Violin Sonata No. 1; Sonata for 2 Pianos & Percussion; 10 Duos
Bartok: Complete Works for Violin, Vol. 1
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8317d880afa241ff39396c97d00caf9376f8633b1d330808e720efe80423f9b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBF076140501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d20f475da247ffc0238111acb46e0a1c155b308938aeec6382426420ce3e622. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBF076140502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547da7af77ed745e1b6b6bd529e249f9748258e74745446d7224619c9dc2ed65. 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/GBF076140503.
Giselle, Act I: No. 3, Loys seul – Entrée de Giselle
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Giselle, Act I: No. 4, Retour de la vendange – Valse
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Giselle, Act I: Pas des vendanges: d. Allegro un peu louré
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea0c1b94b473f0587627079e2eb2e4a898b2cdd434245ed81aa608ec7b5cf8e. 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/GBF076140506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d350d2b2eb5aa5337b92c3ac7a2e5a8894b8b5fbb04031210bd27f91a8f7e16. 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/GBF076140507.
Giselle, Act I: No. 7, Marche des vignerons
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Giselle, Act I: Pas de seul. Variation de Giselle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe13debc1fe8804011e5b10cf5590e303313d45f5df066447f66cca00935c46. 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/GBF076140509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db220c9ec9fece4e6b911bcd3391cdfd46dd306d03a7cc40ece67efc28d9073. 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/GBF076140510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8721411b5e23fff8b5f539d7377e4e4b7bcdf21d3ee02510a55010f512905e2. 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/GBF076140511.
Giselle, Act II: No. 10, Apparition de Myrthe et évocation magique. Andante – Andantino poco allegretto – No. 10a, Pas des premières Wilis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8bade208ffd6baaada63cb2b3d13dc446640021d3c566f20c233d09df0fd53. 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/GBF076140512.
Giselle, Act II: No. 11, Apparition de Giselle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874771058bce8bfceb9816c544ac7adaed93ab94e472fcecd2aa3c299e34c838. 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/GBF076140513.
Giselle, Act II: No. 13, Entreé de Loys et Wilfrede
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Giselle, Act II: No. 14, Entrée d'Hilarion, scène et fugue des Wilis
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Giselle, Act II: No. 15, Grand pas de deux: a. Adage. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7317000129ca732b229922ea45b336160739be1edbdc3f38f57010c39c0d8723. 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/GBF076140516.
Giselle, Act II: No. 15, Grand pas de deux: b. Variation de Loys
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Giselle, Act II: No. 15, Grand pas de deux: c. Variation de Giselle. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26cd017a945f32670e0dd2a42f4f2999f880f4a2598d5ce43216d57e9b95ff6d. 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/GBF076140518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7c279eedd04d612e8d60f1d9ff761091f159476d1cc65bc2d614b390eb6da3. 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/GBF076140519.
Schumann: Kinderszenen, Op. 15: No. 1, Von fremden Ländern und Menschen
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Poulenc: Villageoises, FP 65 "6 Petites pièces enfantines": No. 2, Staccato
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d683d86d72abc2136a074e438c60e7f79dfdf75fb40efe84be2943f02648f4. 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/GBAYC2400025.
Satie: Sports et divertissements: No. 6, Colin-maillard
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Prokofiev: Music for Children, Op. 65: No. 10, March
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Kabalevsky: 30 Pieces for Children, Op. 27: No. 2, Little Song
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae8845ca66d64e5f4a8ab500cbf47d95d600ff27fc8783935436283edae13c4. 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/FRZ117903013.
Bartók: For Children, Sz. 42, Book I "Hungarian Folk Songs": No. 13, Runaway Horse. Andante
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Shostakovich: Children's Notebook, Op. 69: No. 4, Merry Tale
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Vaughan Williams: 10 Blake Songs: No. 1, Infant Joy
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Beethoven: Piano Exercise in C Major, Hess 59
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Ravel: Ma mère l'Oye, M. 60: III. Laideronnette, impératrice des pagodes
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6c1a6668ab1fccc54ca7e12041a3f4e4abdf3a2dd1f508da1801a4cc80fefe. 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/FRZ209645200.
Debussy / Orch. Caplet: La boîte à joujoux, CD 136, L. 128: I. Prélude. Le sommeil de la boîte
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Khachaturian: Children's Album, Book I, Op. 62: No. 1, Andantino
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Mendelssohn: 6 Kinderstücke, Op. 72: No. 1, Allegro non troppo, MWV U171
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CPE Bach: Notebook for Anna Magdalena Bach: March in D Major (Formerly Attributed to JS Bach as BWV Anh. 122)
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Gounod: 15 Mélodies enfantines: No. 15, L'arithmétique
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Ropartz: Jeunes filles: No. 5, La capricieuse
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Grieg: The Mountain Maid, Op. 67: No. 6, Kidlings' Dance (Version for Trumpet and Piano)
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Rossini: Péchés de vieillesse, Vol. 5 "Album pour les enfants adolescents": No. 10, Ouf ! Les petits pois
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Mussorgsky: The Nursery: No. 7, Sailor the Cat
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Mompou: Scènes d'enfants: No. 5, Jeunes filles au jardin
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Berlioz: L'enfance du Christ, Op. 25, H 130, Pt. 2 "La fuite en Égypte": L'adieu des bergers. "Il s'en va loin de la terre" (Chœur)
Orchestre De La Société Des Concerts Du Conservatoire
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Tchaikovsky: Children's Album, Op. 39: No. 23, The Organ-Grinder Sings
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Saint-Saëns: Étienne Marcel, Act III: Divertissement. Entrée des écoliers et des ribaudes (Transcr. Debussy for 2 Pianos)
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Bartók: Symphonic Works, Vol. 2 (Complete Edition)
Das Orgelbüchlein, BWV 599-644: Christe, du Lamm Gottes, BWV 619 (Arr. Kurtág) - Grand Piano
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6 Studies in Canonic Form, Op. 56: No. 1, Nicht zu schnell - Grand Piano
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Sonata for Solo Violin No. 3 in C Major, BWV 1005: I. Adagio (Arr. Víkingur Ólafsson) - Grand Piano
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Játékok / Book 3: Harmonica (Hommage á Borsody László) - Grand Piano
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3 Hungarian Folksongs from the Csìk, Sz. 35a: I. Rubato - Grand Piano
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3 Hungarian Folksongs from the Csìk, Sz. 35a: II. L’istesso tempo - Grand Piano
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3 Hungarian Folksongs from the Csìk, Sz. 35a: III. Poco vivo - Grand Piano
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7 Fantasies, Op. 116: No. 4, Intermezzo (Adagio) in E Major - Grand Piano
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Játékok / Book 5: A Voice in the Distance - Grand Piano
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Ave María (Arr. Víkingur Ólafsson) - Grand Piano
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Vesperae solennes de confessore in C Major, K. 339: V. Laudate Dominum omnes gentes (Arr. Víkingur Ólafsson) - Grand Piano
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Kinderszenen, Op. 15: No. 7, Träumerei - Upright Piano
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Zzzz. Carnival of the Insects - A Symphony for Life
Grieg: Lyric Pieces, Book 3, Op. 43: No. 1, Butterfly
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Berlioz: 8 Scènes de Faust, Op. 1, H 33: No. 5, Chanson de Méphistophélès "Histoire d'une puce"
Orchestre Philharmonique de Radio France
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Chopin: 12 Études, Op. 25: No. 9 in G-Flat Major "Butterfly"
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Schubert, F: Bagatelles, Op. 13: No. 9, L'abeille
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Lyadov: 8 Russian Folksongs, Op. 58: No. 4, Humorous Song "I Danced with a Mosquito"
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Massenet: 2 Pièces pour piano: No. 1, Papillons noirs
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Bartók: Mikrokosmos, Sz. 107, Book VI: No. 142, From the Diary of a Fly
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Tippet: Songs for Ariel: No. 3, Where the Bee Sucks
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Schubert: Der Schmetterling, Op. 57 No. 1, D. 633
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Couperin: Second livre de pièces de clavecin, Sixième ordre: VIII. Le moucheron
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Schumann: Liederalbum für die Jugend, Op. 79: No. 14, Marienwürmchen
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Arne: Where the Bee Sucks (From Shakespeare's "The Tempest")
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Bennett: Songs Before Sleep: No. 1, The Mouse and the Bumblebee
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Satie: Carnet d'esquisses et de croquis: No. 17, Petit prélude de "La mort de monsieur Mouche"
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Lecocq: 6 Fables de La Fontaine: No. 4, La cigale et la fourmi
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Nicolai: Die lustigen Weiber von Windsor, Act 3: Mückentanz. "Mücken, Wespen, Fliegenchor" (Spärlich, Cajus, Falstaff, Reich, Chor)
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Chausson: 7 Mélodies, Op. 2: No. 3, Les papillons
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Roussel: Le festin de l'araignée, Op. 17, Pt. 2: XIII. Funérailles de l'Éphémère
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Purcell: Dioclesian, Z. 627, Act 4: Butterfly Dance
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Martin: 5 Songs of Ariel: No. 5, Where the Bee Sucks There Suck I
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Crumb: Black Angels "Thirteen Images from the Dark Land": Threnody I. Night of the Electric Insects
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Mayerl: 4 Insect Oddities: No. 3, Praying Mantis
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Samazeuilh: Le cercle des heures: V. Si j'étais une luciole
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Friml: The Firefly, Act 1: "Love Is Like a Firefly" (Nina)
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Mussorgsky: Mephistopheles' Song in Auerbach's Cellar "Song of the Flea"
Orchestre National Radiodiffusion Française
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Gallot: Dialogue ou Chaconne "La mouche"
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Plakidis: 2 Grasshopper Dances for Solo Violin: No. 2, Happy Dance
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Puccini: Madama Butterfly, Act 2: "Come una mosca prigioniera" (Suzuki, Butterfly)
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Elgar: The Wand of Youth, Suite No. 2, Op. 1b: III. Moths and Butterflies
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Delage: Fables de La Fontaine, Op. 20: No. 2, La cigale et la fourmi
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Offenbach: Orphée aux enfers, Act 2: Duo de la mouche. "Il m'a semblé sur mon épaule" (Eurydice, Jupiter)
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Porter: Hitchy-Koo: Bring Me Back My Butterfly
Thomas Hampson/London Symphony Orchestra/John McGlinn
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Lincke: Lysistrata, Act 2: Glühwürmchen-Idyll. "Wen die Nacht sich niedersenkt"
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Caplet: 3 Fables de La Fontaine: No. 2, La cigale et la fourmi
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Messager: Madame Chrysanthème, Act 3: "Écoutez, c'est le chant des cigales" (Madame Chrysanthème)
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Bartók: Kossuth, 2 Portraits & Orchestral Suite No. 1
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Sonata For 2 Pianos And Percussion, Sz. 110: 3. Allegro non troppo
Bartók: Sonata For 2 Pianos And Percussion, Sz. 110 / Ravel: Ma mère l'oye, M. 62; Rapsodie espagnole, M. 54
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