Complex sentence: The Dumb Blondes were a English glam rock band, in 1977 the band consisted of current Def Leppard guitarist Phil Collen, singer Jeff Hepting, bassist Pete Webb, and drummer Fred Ball.
Split into simpler sentences: The Dumb Blondes were a English glam rock band. The first line-up also featured current Def Leppard guitarist Phil Collen, singer Jeff Hepting, bassist Pete Webb, and drummer Fred Ball.