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Hummel, Johann N. (1778-1837)
Piano Septet, Op. 74, "Grand Septuor pour le Piano, Flute, Hautbois, Cor, Alto, Violoncello & Contrebasse Composé et dedié a sa majesté [in medallion] Jmperiale Madame la Princesse l'Archducesse Marie Louise d'Autriche...Ouvre 74me" Artaria: Vienna, . Pl.n: 2451. first edition. Folio. 33 + 7 + 7 + 5 + 8 + 7 + 6 pp. One page in piano part repaired, crayon markings from previous owners on covers and first pages of parts, but never affecting musical text, otherwise very good.
Piano score and full set of parts.
The piano score is interesting in having a variable number of staves for the instrumental parts, sometimes above, sometimes below the piano part. The individual instrumental parts are always combined into no more than a grand staff's worth of music, enabling the performance of the piece on two pianos, if both pianists had copies of the piano score.