Complex sentence: Jon St. James is an American guitarist, songwriter--composer, producer and engineer whose Casbah Recording Studio was a part of Orange County, California's new music scene in the late 1970s and early to mid- 1980s.
Split into simpler sentences: Jon St. James is an American guitarist, songwriter--composer, producer and recording engineer. His Casbah Recording Studio was a part of Orange County, California's new music scene in the late 1970s and early to mid- 1980s.