Variations on a Theme by Robert Schumann in F sharp minor,op.9 Variations on a theme by Joseph Haydn: in B-flat major, op. 56a Variations on a Theme by Paganini in A minor,op.35 Variations on a Theme by Robert Schumann in E flat major,op.23 for piano four hands Variations on a theme of handel, in B flat major op. 24 Variations on a Theme by Joseph Haydn,op 13 Variations on a Theme by Anselm Huhuttenbrenner in a Minor D 576 Variations on a theme by Joseph Haydn, op.56a Variations on a Theme by Joseph Haydn,op.56a Variations on a theme by Joseph Haydn op.56a