42, is a lively waltz composed by Frédéric Chopin in 1840.
[1] Though none of Chopin's works were actually intended to be danced to,[2] this waltz does appear to be appropriate for use in the ballroom.
This waltz contains many virtuosic passages and a mesmerizing coda, making it a favourite with audiences.
It is often considered one of Chopin's most important waltzes and is also one of the most challenging to play.
[1][3][4] U.S. President Harry S. Truman, an amateur pianist, told friends that Chopin's Waltz in A-flat major was one of his favorite compositions.