Leslie West, guitarist extraordinaire formerly of Mountain and the incredible power trio of West, Bruce, and Laing. From what I have read, Pete Townshend wanted to do the session without overdubs and Leslie was invited to play the second guitar part. I don’t know if this is true but I do know that this performance was amazing.
If this has whetted your appetite to hear more from Leslie, take a listen to this track from the first West, Bruce, and Laing album called Why Dontcha. The song starts kind of slow but don’t give up on it. After a short bluesy vocal by Jack Bruce, Leslie blows the roof off with some unbelievable power chording and a guitar solo to die for. Let me know what you think.