Charlie Watts and his jazz quintet.
Ginger Baker playing with Fela and jazz artists
David Byrne - Talking Heads and solo work with Eno
Norman Cook - Housemartins -> Fatboy Slim
Rock performers that play/record a different genre
Enjoyed listening to Willie and the Poor Boys last night - Bill Wyman and a group of musicians play 50’s style music. Thinking about this I guess the same could be said for Jeff Beck’s Rock and Roll Party with Imelda May, and maybe Bruce Springsteen’s Seeger Sessions (going way back to old folk music). What other artist/s have done similar alternate genre work that you enjoy?