A major cult figure among progressive bluegrass aficionados, Peter Rowan participated in a number of adventurous projects in the late '60s and '70s before embarking on a highly productive solo career. Primarily a guitarist, Rowan also sang, yodeled, and played various members of the mandolin family. He was born in 1942 and grew up in Wayland, MA, near Boston; his parents and several relatives were musicians, and he and his brothers Chris and Lorin grew up playing both rock and bluegrass together. Rowan also formed a Tex-Mex band called the Cupids in high school, and after college he sang and played mandolin in the folk group the Mother Bay State Entertainers, whom he joined in 1963. He also played with Jim Rooney and Bill Keith, and in 1964 he joined Bill Monroe's legendary Blue Grass Boys as a vocalist and guitarist. He departed in 1967 to team up with mandolin virtuoso David Grisman in the eclectic, progressive-minded folk-rock band Earth Opera, who released two albums and often opened for the Doors. Rowan next moved to the San Francisco Bay Area and joined Seatrain, a bluegrass/rock hybrid outfit. He appeared on two albums over 1970-1971, then left to play with Jerry Garcia and Grisman in the bluegrass group Old & in the Way, also joining Grisman in Muleskinner.