The Prelude in A-flat major, B. 86 was composed by Frédéric Chopin as a gift to a friend, Pierre Wolff, professor of piano at the Geneva Conservatory. The composition, which predates the first of the Preludes, Op. 28, ended up in the possession of the family of one of Wolff's students and was not publicly performed until 1919, following the compositions first publication, in a Swiss arts magazine in 1918.