Complex sentence: Alvin Lee (born December 19,1944 in Nottingham, England) began playing guitar at the age of thirteen, and with Leo Lyons formed the core of the band Ten Years After in 1960.
Split into simpler sentences: Alvin Lee (born December 19,1944 in Nottingham, England) is an English guitarist. He began playing guitar at the age of thirteen, and with Leo Lyons formed the core of the band Ten Years After in 1960.