Muleskinner was perhaps the one and only bluegrass supergroup. Composed of David Grisman (mandolin, vocals), Clarence White (guitar), Peter Rowan (guitar, vocals), Richard Greene (fiddle), and Bill Keith (banjo), the group formed as a favor to a California public television station looking for someone to perform on a show with Bill Monroe's Bluegrass Boys. The choice of musicians was perfect for all had began their careers with bluegrass bands (Rowan, Greene, and Keith with Bill Monroe's band; Clarence White with the Kentucky Colonels; and Grisman with the New York Ramblers) a...