As part of Mashmakhan, Mercer played on the Festival Express tour and was interviewed for the 2003 documentary.
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Parsons was out of the lineup by June 1970 (replaced by guitarist Rick Roberts) when the band toured Canada as part of the Festival Express tour, with Hillman reverting to bass guitar.
Clarke Mackey was one of four cinematographers on the 1970 Canadian concert film Festival Express featuring Janis Joplin, the Grateful Dead and The Band, that was not released until 2003, 33 years after the original event.