Conversation so far:
What year did Peter Cetera leave the band Chicago?
Vocalist Peter Cetera ultimately left Chicago in the summer of 1985.
What led to Peter Cetera's departure from the band Chicago?
Peter Cetera  proposed an arrangement with the band where they would take hiatuses after tours to let him focus on solo work, but the band declined.
Did Chicago's Peter Cetera's departure cause any issues within the band?
Chicago's guitarist Chris Pinnick left the group prior to the recording of the band's next album.
Did Chicago's Peter Cetera's departure lead to the break-up of the band?
Chicago's Peter Cetera's former position was filled by bassist and singer-songwriter Jason Scheff, son of Elvis Presley's bassist Jerry Scheff.

Question: What did Peter Cetera do after leaving Chicago?
Self-contained rewrite: What did Chicago's Peter Cetera do after leaving?