Best Rock and Roll sideman ever?

[Averageman]

A lot of guys have tried, but few have come close to Billy Preston.

https://www.youtube.com/watch?v=XQ3XNtdzSFA
Beatles, Stones and finally his own career.

[Bluto]

69521

[Averageman]

Then there is this guy...
https://www.imdb.com/name/nm0905186/bio
Legendary rock'n'roll session guitarist par excellence Robert "Waddy" Wachtel was born on May 24, 1947 to Harry and Rhoda Wachtel in the Jackson Heights section of Queens, New York City. He acquired his unusual nickname "Waddy" when he was a teenager and took guitar lessons from teacher Gene Dell from ages nine to fourteen. Wachtel started out performing in local bands around the New York area. In 1970 Waddy moved to Los Angeles, California to work as a composer and producer for the Cowsills.

[Sidneyious]

https://www.youtube.com/watch?v=x8A9Y1Dq_cQ

Im not a huge fan of either but I respect what they've done for rock and roll, country and blues.

and I listen to slayer, Al Jackson Jr with Bill Withers? shit get out of here.