BoogieMan
Blues Junior
Check out Glen's solo at 4:40 followed by an interesting analysis of his technique.
https://www.youtube.com/watch?v=IvF7RJAbtys
https://www.youtube.com/watch?v=IvF7RJAbtys
He also played Bass for the Beach Boys and sang when Brian took his first hiatus.He was a session player with the LA Wrecking Crew. Before his solo career.