Complex sentence: Ian Gillan (born 19 August 1945 in Hounslow, London) is an English rock music vocalist and songwriter, who originally found success with, and is best known as, the lead singer and lyricist for Deep Purple.
Split into simpler sentences: Ian Gillan (born 19 August 1945 in Hounslow, London) is an English rock music vocalist and songwriter. He originally found commercial success with, and is best known as, the lead singer and lyricist for Deep Purple.