Complex sentence: He was originally the lead vocalist for Sean Dowdell And His Friends? and Grey Daze, and he's also the current lead vocalist for Stone Temple Pilots and rock cover band Bucket of Weenies.
Split into simpler sentences: He was originally the lead vocalist for Sean Dowdell And His Friends? and Grey Daze. He is also the current lead vocalist for Stone Temple Pilots and rock cover band Bucket of Weenies.