Complex sentence: As a teenager, he played in a rock band called QED, David played lead guitar with a punk rock band called Door 66, David was educated at Highfield High School, a state secondary school in Marton, Blackpool.
Split into simpler sentences: As a teenager, he played in a rock band called QED, and played lead guitar with a punk rock band called Door 66. He was educated at Highfield High School, a state secondary school in Marton, Blackpool.