Question: What instrument was played by the man who was part of the New Grass Revival, along with Bela Fleck, John Cowan and Pat Flynn?
Sentence (from "New Grass Revival"): New Grass Revival was an American progressive bluegrass band founded in 1971, and composed of Sam Bush, Courtney Johnson, Ebo Walker, Curtis Burch, Butch Robins, John Cowan, Béla Fleck and Pat Flynn.
Relevant evidence: No