Complex sentence: He has been a part of Toronto's indie music scene since the early 1980s, playing drums in the original line-ups for Cowboy Junkies and A Neon Rome before becoming the lead vocalist, guitarist and songwriter for Change of Heart.
Split into simpler sentences: He has been a part of Toronto's indie music scene since the early 1980s. He was playing drums in the original line-ups for Cowboy Junkies and A Neon Rome before he became the lead vocalist, guitarist and songwriter for Change of Heart.