왈츠 가단조 (Waltz in A minor, B.150)

Frédéric Chopin's Waltz in A minor, Op. posth., B. 150, WN 63, KK IVb/11, P. 2/11, is a waltz for solo piano. The waltz was published in 1860, after the composer's death, by Jacques Maho. At this time, it was attributed to Charlotte de Rothschild and was published as no. 3 of "Four pieces for piano". This collection also included Chopin's Nocturne in C minor, B. 108. In The Musical Quarterly, January 1939, Jacques-Gabriel Prod'homme first reported the waltz. In 1955, this piece was published in the special edition of the magazine La Revue Musicale and finally reattributed to Chopin. In 1965, it was republished by Andrzej Koszewski. There is disagreement over the date of composition: Chopin National Edition gives 1847–49, Maurice J. E. Brown gives 1843, and Gastone Belotti gives 1832–33 (specifically early 1833). Prod'homme referred to the waltz as a "youthful" work. Koszewski expressed that the waltz belonged to the Warsaw period of the composer, though also saying that it could date from a later period.