Gallissas Theaterverlag, a company that represented Woolfson in Germany, said Thursday the musician died this week in London. Woolfson’s Web site said he died early Wednesday.

Woolfson was born March 18, 1945, in Glasgow, Scotland. Together with he founded the group, whose music was popular in the U.S. and Germany.

After the group disbanded in the 1990s Woolfson continued to work as a music producer and composer of musicals. His musical “Edgar Allan Poe” is currently playing in Berlin.