I was wondering if anyone could identify this piece on the cover please?

The most prominent music piece in the movie is Chopin's Prelude in E minor, but it certainly isn't it.
Other classical pieces that are featured in the movie are:
Fantasy in F Minor, Op. 49 (Chopin)
Chromatic Fantasy & Fugue (Bach)
Concerto in E-Flat Major K. 271(mozart)
Fantasy in D Minor, K. 397 (mozart)
But I don't think it's anything of those either..