Complex sentence: Synch was a band that formed in 1985, where Jimmy Harnen became the drummer, and was made up of lead vocalist Lou Butwin, guitarist Dave Abraham, bassist James A. Donnelly, and keyboardist Chuck Yarmey.
Split into simpler sentences: Synch was a band that formed in 1985, with Jimmy Harnen as the drummer. The band's other members were lead vocalist Lou Butwin, guitarist Dave Abraham, bassist James A. Donnelly, and keyboardist Chuck Yarmey.