Page 8-Thursday, June 29, 1978-The Michigan Daily Sun and sound Daily Photos by JOHN KNOX T HE ROCK FESTIVAL may have fad, the g6s, hut its predecessor, the folk still thrives. The Mariposa Folk Fest Toronto last weekend left little doubt t music is not being overwhelmed by th craze. Anyone who ferried from do Toronto to the festival site on the Toronto was treated to three days of sunshine conglomeration of music ranging from bli picking to African drumming, from celtic to Cajun accordion. No one was hard-pre something to listen to. The problem, inste deciding which of six simultaneous perf ces to catch. With all of the musical diversity, f goers couldn't help but make some I discoveries of their own. By far one of the discoveries made by the crowd at Marip the blues mandolin of Yank Rachel (con per left). Rachel made his first recordir but considering the energy with which formed his career might have just Backed by other festival musicians in Steve Goodman, Rachel had the crowd and clapping to his country blues mandol