Imre Mező (b. 1932) composed several popular works for children and young people studying music. His set of easy variations ''Miss Melody's Wardrobe,'' originally for piano solo (Z. 15119), has now appeared in a piano duet arrangement. The basic structure has not changed: the set is based on a single Hungarian folk song, demonstrating the many ways of presenting and arranging the same musical material even if the melody itself remains unchanged. The variations are grouped by key and, within each...