Drummer and co-founder of the progressive rock band King Crimson.
He was in the short-lived band Giles, Giles & Fripp with his brother and Robert Fripp.
In 2002 he co-founded the 21st Century Schizoid Band with several former King Crimson members.
His son-in-law Jakko Jakszyk performed with him in 21st Century Schizoid Band.
He was in King Crimson with lead guitarist Robert Fripp.