B.B. King said Peter was the only white guitarist who made him sweat. I guess that was a compliment. ;-) I heard Peter's playing first on the second John Mayall album, A Hard Road. I liked him even more than Clapton, who had been the guitarist on the first Mayall album.
"The Stumble"---a great instrumental on A Hard Road---led me to Freddie King, the song's writer and original performer. Even better yet! I wasn't able to see and hear Freddie live, but I did see Albert King, and realized where most of the white Blues guitarists had learned what to play. Albert King---talk about sweating!