Simplify the following text for a Grade 7 native English-speaking person.
Original: Robert William Gary Moore ( 4 April 1952 -- 6 February 2011 ) , better known simply as Gary Moore , was a musician from Belfast , Northern Ireland , best recognized as a blues rock guitarist and singer .
Simplified: Robert William Gary Moore ( 4 April 1952 -- 6 February 2011 ) or Gary Moore , was a musician from Belfast , Northern Ireland . He was a blues rock guitarist and singer .