Stevenson passed away at his home in West Linton, Scotland on Saturday (28Mar15). The cause of his death was not released as WENN went to press.

He created more than 200 compositions throughout his career, including piano pieces, chamber music, choral music and orchestral works. His most famous piece is the 80-minute piano solo Passacaglia on DSCH, which he wrote between 1960 and 1962 and remains one of the longest unbroken movements for piano.

Stevenson also wrote and performed in music programmes for BBC radio in the 1970s and played piano in a TV documentary on Italian composer Busoni.

He also published books on music and composition and gave lectures around the world including at The Juilliard School in New York City, the University of York in England, and the University of Cape Town, South Africa.