The Prime Movers played a significant part in helping to host the first two Ann Arbor Blues Festivals, in 1969 and 1970, which were the first (and largest) blues festivals (in terms of the number of great bluesman who performed) in the U.S. Michael Erlewine interviewed dozens of the performers, and the spirit of these early festivals carried over into the Ann Arbor Blues & Jazz Festival in 1972, 1973, and 1974.
The Prime Movers played a significant role in hosting the first two Ann Arbor Blues Festivals in 1969 and 1970, which were among the earliest (and largest) blues festivals with many prominent blues musicians. Michael Erlewine interviewed several performers from these events, and their spirit carried over to the subsequent Ann Arbor Blues & Jazz Festival from 1972 through 1974.