Walter Gieseking - Variations on a Theme by Edvard Grieg for Flute and Piano, edited by Ervin Monroe. Walter Gieseking’s Variations on a Theme by Edvard Grieg, is a graceful and inventive work for flute and piano that takes a theme by Grieg and explores it through a series of contrasting variations. The piece combines Gieseking’s characteristic lyricism and harmonic color with increasingly virtuosic writing, providing both the flutist and pianist with an engaging and musically substantial recital work.