Complex sentence: Beserkley's other major success was with Greg Kihn, who sang backup on Earth Quake and Richman records before forming his own band, which achieved great success in the early 1980s with the albums "Rockihnroll" and "Kihnspiracy".
Split into simpler sentences: Beserkley's other major success was with Greg Kihn, who sang backup on Earth Quake and Richman records before forming his own band. This achieved great success in the early 1980s with the albums "Rockihnroll" and "Kihnspiracy".