Complex sentence: Basse was a pioneer in the L.A.-based 80s scene, where he was the frontman in the influential band Black Sheep, which consisted of Slash (musician), James Kottak, George Lynch.
Split into simpler sentences: Basse was a pioneer in the L.A.-based' 80 scene. He was the frontman in Black Sheep which consisted of Slash (musician), James Kottak, George Lynch.