Complex sentence: George Harrison, (25 February 1943--29 November 2001) was an English guitarist, singer, songwriter, and music and film producer who achieved international fame as the lead guitarist of the Beatles.
Split into simpler sentences: George Harrison, (25 February 1943--29 November 2001) was an English guitarist, singer, songwriter. He was also a renowned music and film producer who achieved international fame as the lead guitarist of the Beatles.