Chicago | 25 or 6 to 4 (vocal, guitar, horns only) 2 Comments ADVERTISEMENT VOCALS (Peter Cetera), GUITAR (Terry Kath) and HORNS (Lee Loughnane, James Pankow, Walter Parazaider) from the group’s album Chicago released in 1970: ADVERTISEMENT ADVERTISEMENT ADVERTISEMENT Prev Article Next Article Tags: Chicago 2 Comments John Book This is great. However, Peter Cetera sang the lead in “Questions 67 And 68” on the first album and one of the leads in “I’m A Man”. He didn’t just become a lead with CHICAGO II, he had always been one of the band’s three lead singers from the beginning. Reply studio Editor note: Thanks for visiting and for the correction–made that to the description. Great to have knowledgeable musicologist visitors! Reply Add Comment Cancel reply Δ Subscribe to our newsletter for track updates and more music stuff! Your email stays only with us.