High Quality Content by WIKIPEDIA articles! Franz Schubert wrote two collections of waltzes for piano solo, the 34 Valses Sentimentales (Op. 50, D. 779) and the 12 Valses Nobles (Op. 77, D. 969).Schubert's piano music was slow in taking its place in the standard repertoire of piano literature. Until the early 20th century his vast piano solo production was often criticized for being salon music; good for inexperienced girls, but not to be taken too seriously.Schubert can partly be blamed for that perception problem. In his own day the problem presented itself primarily as financial, however Schubert was continuously low on money, and his multiple endeavors to create lucrative theater productions had all ended in failure.