Wolfgang Köhler, professor of jazz piano at the Berlin Jazz Institute, writes music in the border area between classical, jazz and contemporary music. His 'Variations' for cello and piano are cross-over music in the best sense of the word and a rewarding concert and examination piece of medium difficulty (use of thumb position demanded). The three variations on a vocal theme use different styles like Latin (var. 1), ballad (var. 2) to rhythm and harmony inspired by Prokofiev (var. 3). The recapi...