Original: Music for chamber ensembles includes 15 string quartets, a piano quintet, two pieces for a string octet, and two piano trios. For the piano he composed two solo sonatas, an early set of preludes, and a later set of 24 preludes and fugues.
Simplified: He wrote 24 Preludes and Fugues for piano, a piano trio, two piano concertos, a piano quintet, a sonata for cello and piano and a sonata for viola and piano (his last work).