thumb| Matthias Kirschnereit (born 1962) is a German classical pianist. Life Born in Dorsten, Kirschnereit grew up in Namibia and later studied at the Hochschule für Musik Detmold with Renate Krets
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 0x12423e759c14103ae070f6107a4e039fbe43306407907ef730fab77c20856241. 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/e8b53a12-43fe-4332-a251-5cec4340caf0.json and https://artists.proofprofile.net/proofs/artist/e8b53a12-43fe-4332-a251-5cec4340caf0.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Schumann: Concertant (Concert Pieces and Piano Concerto)
Piano Quintet in G Minor, Op. 8: II. Adagio
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 0xa94d05d94c04fb6783b06e4d01c9716bb94540f7e6204b645779711961963045. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB201265211 — a six-check JSON result.
String Quartet in D Minor: II. Barcarolle (1923 version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9661505d2c167827845db29e58859286e4a17e4b9ca2ee6dcb7c9319b52c8f06. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB201265216 — a six-check JSON result.
Piano Concerto No. 2 in A Minor, Op. 85: I. Allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec68ec2eece70fb57665ba7ada14e8e4efb2507f70552bc8e2a950bf59fde77. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES382132001 — a six-check JSON result.
Piano Concerto No. 2 in A Minor, Op. 85: II. Larghetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19943c0a58a41d1ff334bb33996b0ece0eeaca4849e975d71aa40b43f695475b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES382132002 — a six-check JSON result.
Piano Concerto No. 2 in A Minor, Op. 85: III. Rondo. Allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908ab4d305cda95a3215f405a9c5332e7be0fdf592b3fbf0a60e2def86638714. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES382132003 — a six-check JSON result.
Concert Piece in F Minor, Op. 79: Larghetto affetuoso - Allegro passionato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f71ee4a444d1e782f3611259dfbb72d59f6fecad2835983f12c4e53ee02a13. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES382132004 — a six-check JSON result.
Concert Piece in F Minor, Op. 79: Adagio - Tempo di Marcia - Presto giojoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfdd3de40cdfc5979b4b41fc045190f3ac03038932632beca3befee9a36cc174. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES382132005 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d21306e148f97ae5e90b6b6fc1c3b31751c4dd141d12b8ff1b495a150fb5c39. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES382132006 — a six-check JSON result.
Capriccio brillant, Op. 22: Allegro con fuoco
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d95e4024c05b6b8539251fea829c91e6ce337820e4adbd5b8cbc084d9e6213. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES382132007 — a six-check JSON result.
Flotow: Piano Concertos Nos. 1 & 2 & Overtures
Piano Concerto No. 2 in A Minor: III. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582b6482db56cc45856004999b036ee5c4a0d6f37cd1a6a85a595eccbe4d8487. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB202037206 — a six-check JSON result.
Here Comes The Sun (Arr. For piano by Benjamin Köthe & Matthias Kirschnereit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb694f284673e9b34fe5623bf6a43f25568a05a4ff6ecedbdb7f62d579d954a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES382333008 — a six-check JSON result.
Just the Two of Us (Arr. For piano by Mario Stallbaumer & Matthias Kirschnereit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43a583c014b52baebc2deafd7da2a2c7754ad122341eab21d2ce8a11b72cf3f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES382333031 — a six-check JSON result.
Piano Concerto in G Major, Hob.XVIII:4: I. Allegro
Württembergisches Kammerorchester Heilbronn
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Piano Concerto in G Major, Hob.XVIII:4: II. Adagio
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Piano Concerto in G Major, Hob.XVIII:4: III. Rondo. Presto
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Piano Concerto in C Major, Hob.XVIII:8: I. Allegro moderato
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Piano Concerto in C Major, Hob.XVIII:8: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffcb234c6cacbed2b9c35feff090ba01c4dd750fd009d72b433bc609983aefd4. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES382221205 — a six-check JSON result.
Piano Concerto in C Major, Hob.XVIII:8: III. Allegro
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Piano Concerto in D Major, Hob.XVIII:2: I. Allegro moderato
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Piano Concerto in D Major, Hob.XVIII:2: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5066136834c22a3e3f6894683284274525d62c4a0668e1ea71c995a2e8edc0ff. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES382221108 — a six-check JSON result.
Piano Concerto in D Major, Hob.XVIII:2: III. Allegro
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Piano Concerto in C Major, Hob.XVIII:5: I. Moderato
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Piano Concerto in C Major, Hob.XVIII:5: II. Andante
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Piano Concerto in C Major, Hob.XVIII:5: III. Allegro
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Concertino in C Major, Hob.XVIII:10: I. Allegro
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Concertino in C Major, Hob.XVIII:10: II. Adagio
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Concertino in C Major, Hob.XVIII:10: III. Allegro
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Piano Trio in G Major, Hob.XV:25: III. Finale. Rondo all'Ongarese. Presto - Arr. for Piano and String Orchestra by Ettore Prandi
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Piano Concerto in C Major, Hob.XVIII:1: I. Allegro moderato
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Piano Concerto in C Major, Hob.XVIII:1: II. Largo
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Piano Concerto in C Major, Hob.XVIII:1: III. Allegro molto
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Piano Concerto in F Major, Hob.XVIII:3: I. Allegretto
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Piano Concerto in F Major, Hob.XVIII:3: II. Largo
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Piano Concerto in F Major, Hob.XVIII:3: III. Presto
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Piano Concerto in D Major, Hob.XVIII:11: I. Vivace
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Piano Concerto in D Major, Hob.XVIII:11: II. Un poco adagio
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Piano Concerto in D Major, Hob.XVIII:11: III. Rondo all'Ungarese. Allegro assai
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Double Concerto in F Major, Hob XVIII:6: I. Allegro moderato
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Double Concerto in F Major, Hob XVIII:6: II. Largo
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Double Concerto in F Major, Hob XVIII:6: III. Presto
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Two Piano Pieces, WoO 54: "Lustig & Traurig"
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Sonata in F Minor, WoO 47: I. Larghetto maestoso
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Piano Piece for Piringer in B Minor, WoO 61
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Sonatina in F Major, Kinsky Halm Anh.5 No. 2: II. Rondo. Allegro
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Organ Concerto in B-Flat Major, Op. 7 No. 1, HWV 306 (Arr. for Piano & Orchestra): I. Andante
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Organ Concerto in B-Flat Major, Op. 7 No. 1, HWV 306 (Arr. for Piano & Orchestra): II. Largo
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Organ Concerto in B-Flat Major, Op. 7 No. 1, HWV 306 (Arr. for Piano & Orchestra): III. Fuga: Allegro
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Organ Concerto in B-Flat Major, Op. 7 No. 1, HWV 306 (Arr. for Piano & Orchestra): IV. Organo ad libitum: Adagio
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Organ Concerto in B-Flat Major, Op. 7 No. 1, HWV 306 (Arr. for Piano & Orchestra): V. Bourree: Allegro
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Organ Concerto in A Major, Op. 7 No. 2, HWV 307 (Arr. for Piano & Orchestra): I. Ouverture
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Organ Concerto in A Major, Op. 7 No. 2, HWV 307 (Arr. for Piano & Orchestra): II. A tempo ordinario
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Organ Concerto in A Major, Op. 7 No. 2, HWV 307 (Arr. for Piano & Orchestra): III. Organo ad libitum - Sarabande
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Organ Concerto in A Major, Op. 7 No. 2, HWV 307 (Arr. for Piano & Orchestra): IV. Allegro
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Organ Concerto in B-Flat Major, Op. 7 No. 3, HWV 308 (Arr. for Piano & Orchestra): II. Organo ad libitum - Sarabande
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Organ Concerto in B-Flat Major, Op. 7 No. 3, HWV 308 (Arr. for Piano & Orchestra): III. Spiritoso
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Organ Concerto in B-Flat Major, Op. 7 No. 3, HWV 308 (Arr. for Piano & Orchestra): IV. Menuet
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Organ Concerto in D Minor, Op. 7 No. 4, HWV 309 (Arr. for Piano & Orchestra): I. Adagio
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Organ Concerto in D Minor, Op. 7 No. 4, HWV 309 (Arr. for Piano & Orchestra): II. Allegro cosi
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Organ Concerto in D Minor, Op. 7 No. 4, HWV 309 (Arr. for Piano & Orchestra): III. Allegro
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Organ Concerto in G Minor, Op. 7 No. 5, HWV 310 (Arr. for Piano & Orchestra): III. Andante larghetto e staccato
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Organ Concerto in G Minor, Op. 7 No. 5, HWV 310 (Arr. for Piano & Orchestra): V. Menuet
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Organ Concerto in G Minor, Op. 7 No. 5, HWV 310 (Arr. for Piano & Orchestra): VI. Gavotte
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Organ Concerto in B-Flat Major, Op. 7 No. 6, HWV 311 (Arr. for Piano & Orchestra): I. Pomposo
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Organ Concerto in B-Flat Major, Op. 7 No. 6, HWV 311 (Arr. for Piano & Orchestra): II. Air: A tempo ordinario
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Songs Without Words, Op. 19b: I. Andante con moto in E Major
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Songs Without Words, Op. 19b: II. Andante espressivo in A Minor
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Songs Without Words, Op. 19b: III. Molto allegro e vivace in A Major
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Songs Without Words, Op. 19b: IV. Moderato in A Major
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Songs Without Words, Op. 19b: V. Piano agitato in F-Sharp Minor
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Songs Without Words, Op. 19b: VI. Andante sostenuto in G Minor "Venetianisches Gondellied"
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Songs Without Words, Op. 30: I. Andante espressivo in E-Flat Major
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Songs Without Words, Op. 30: II. Allegro di molto in B-Flat Major
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Songs Without Words, Op. 30: III. Adagio non troppo in E Major
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Songs Without Words, Op. 30: IV. Agitato e con fuoco in B Minor
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Songs Without Words, Op. 30: VI. Allegretto tranquillo in F-Shark Minor "Venezianisches Gondellied"
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Songs Without Words, Op. 38: I. Con moto in E-Flat Major
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Songs Without Words, Op. 38: II. Allegro non troppo in C Minor
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Songs Without Words, Op. 38: III. Presto e molto vivace in E Major
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Songs Without Words, Op. 38: IV. Andante in A Major
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Songs Without Words, Op. 38: V. Agitato in A Minor
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Songs Without Words, Op. 38: VI. Andante con moto in A-Flat Major "Duett"
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Songs Without Words, Op. 53: I. Andante con moto in A-Flat Major
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Songs Without Words, Op. 53: II. Allegro non troppo in E-Flat Major
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Songs Without Words, Op. 53: III. Presto agitato in G Minor "Gondellied"
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Songs Without Words, Op. 53: IV. Adagio in F Major "Abendlied"
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Songs Without Words, Op. 53: V. Allegro con fuoco in A Minor "Volkslied"
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Songs Without Words, Op. 62: I. Andante espressivo in G Major
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Songs Without Words, Op. 62: III. Andante maestoso in E Minor "Trauermarsch"
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Songs Without Words, Op. 62: IV. Allegro con anima, mit vieler Innigkeit vorzutragen in G Major
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Songs Without Words, Op. 62: V. Andante con moto in A Minor "Venezianisches Gondellied"
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Songs Without Words, Op. 62: VI. Allegretto grazioso in A Major "Frühlingslied"
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Songs Without Words, Op. 67: II. Allegro leggiero in F-Sharp Minor
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Songs Without Words, Op. 67: IV. Presto in C Major "Spinnerlied"
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Songs Without Words, Op. 67: V. Moderato in B Minor
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Songs Without Words, Op. 85: I. Andante espressivo in F Major
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Songs Without Words, Op. 85: IV. Andante sostenuto in D Major
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Six Songs Without Words Without Opus Number: I. Ein Lied ohne Worte an Fräulein Doris Loewe in F Major
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Organ Concerto No. 1 in G Minor, Op. 4, No. 1, HWV 289: III. Adagio (arr. for piano and orchestra)
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Organ Concerto No. 3 in G Minor, Op. 4, No. 3, HWV 291: I. Adagio (arr. for piano and orchestra)
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Organ Concerto No. 4 in F Major, Op. 4, No. 4, HWV 292: II. Andante (arr. for piano and orchestra)
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Bach: Kleine Praeludien und Fughetten (Digitally Remastered)
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Scenes from Childhood, Op. 15: No. 1, Of foreign lands and people
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Scenes from Childhood, Op. 15: No. 7, Dreaming
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Forest Scenes, Op. 82: No. 1, Entrance. Nicht zu schnell
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Forest Scenes, Op. 82: No. 7, The bird as prophet. Langsam, sehr zart
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Piano Concerto No. 27 in B-Flat Major, K. 595: II. Larghetto
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Piano Concerto No. 15 in B-Flat Major, K. 450: II. Andante
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Bunte Blätter, Op. 99: Drei Stücklein: I. Nicht schnell, mit Innigkeit
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Bunte Blätter, Op. 99: Albumblätter: IV. Ziemlich langsam
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Piano Concerto No. 26 in D Major, K. 537 "Coronation": II. Larghetto
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Piano Concerto No. 21 in C Major, K. 467, "Elvira Madigan": II. Andante
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