Edgar Willmar Froese ( 6 June 1944 -- 20 January 2015 ) was a German artist and electronic music pioneer , best known for founding the electronic music group Tangerine Dream .
Edgar Willmar Froese ( 6 June 1944 -- 20 January 2015 ) was a German artist and electronic music pioneer . He was best known for founding the electronic music group Tangerine Dream .