Publisher Desc.  The Waltz in Ab, Op. 39, No. 15 is one of the best-known piano pieces by the great German Romantic composer Johannes Brahms (1833-1897). Although just one in a set of 16 short waltzes for piano that Brahms penned in 1865, it has long taken on a life of its own, eclipsing all of the others in popularity. The set was originally written for piano 4-hands, where this waltz was in the key of A. When Brahms arranged it for solo piano later that same year, he lowered it a semitone to Ab. This arrangement restores the original key. Level: M - Duration: 1:45