 The Grateful Dead album "Dead Set" has a characteristic example of a 1980 "Rhythm Devils" segment which is titled as such, and which is followed by a "Space" segment.The Rhythm Devils duo were formally recruited by director Francis Ford Coppola to record the soundtrack to the film "Apocalypse Now".During 1979 and 1980, Hart and Kreutzmann, along with other musicians (mostly percussionists), Airto Moreira, Mike Hinton, Jim Loveless, Greg Errico, Jordan Amarantha, Phil Lesh and Flora Purim, recorded sessions at the Grateful Dead's Marin County studios and "The Barn", Hart's studio in Novato.