In addition to harmonica, Sebastian played guitar and occasionally autoharp. One of Sebastian's first recording gigs was playing guitar and harmonica for Billy Faier's 1964 album The Beast of Billy Faier. He also played on Fred Neil's album Bleecker & MacDougal and Tom Rush's self-titled album in 1965. He played in the Even Dozen Jug Band and in the Mugwumps, which split to form the Lovin' Spoonful and the Mamas & the Papas. Bob Dylan invited him to play bass on his Bringing It All Back Home sessions (though Sebastian's parts probably did not appear on the album)Unterberger, Richie. Turn! Turn! Turn! The '60s Folk-Rock Revolution. Backbeat Books, 2002, p. 109–110. . and to join Dylan's new electric touring band, but Sebastian declined in order to concentrate on his own project, the Lovin' Spoonful.Sounes, Howard. Down the Highway: The Life of Bob Dylan. Doubleday, 2001, p. 121. .
in addition to harmonica sebastian played guitar and occasionally autoharp one of sebastian's first recording gigs was playing guitar and harmonica for billy faier's 1964 album the beast of billy faier he also played on fred neil's album bleecker & macdougal and tom rush's self-titled album in 1965 he played in the even dozen jug band and in the mugwumps which split to form the lovin' spoonful and the mamas & the papas bob dylan invited him to play bass on his bringing it all back home sessions (though sebastian's parts probably did not appear on the album)unterberger richie turn turn turn the '60s folk-rock revolution backbeat books 2002 p 109–110  and to join dylan's new electric touring band but sebastian declined in order to concentrate on his own project the lovin' spoonfulsounes howard down the highway the life of bob dylan doubleday 2001 p 121 