Variations on a nursery song, op.25 Variations on a nrusery song, op.25 Variations on a Nursery Song Op.25 Variations On A Nursery Song Op.25 Variations on a Nursery Tune,Op.25 Variations On A Nursery Song Variations on a Russian theme, op. 23 Variations on a theme of chopin, op. 22 Variations on a Theme by Haydn, op.56a Variations on a theme by paganini, op.35