Variations on an Original Theme in D major,op.21 no.1 Eight variations on an original theme in A flat major,op.35,D813 Variations on a Hungarian Song in D major,op.21 no.2 32 Variations on an Original Theme in C minor, WoO 80 Variations on an original theme ("Enigma") op.36 Variations on an original theme ("enigma"), op.36 Variations on a original theme ('Enigma"),Op.36 Variations on an Original Theme ("Enigma"),op.36 15 Variations on an Original Theme in E flat major, Op.35 32 Variations on an original theme,in C minor (Grove's Listing 191)