Eventually it became The Chicago Transit Authority with the addition of members James Pankow on trombone, Robert Lamm on vocals and keyboards, and Peter Cetera on vocals and bass.
Peter Pan | Peter Gabriel | Peter Jackson | Peter | Saint Peter | Peter Paul Rubens | Peter Sellers | Peter the Great | Blue Peter | Peter Frampton | Peter Greenaway | Peter Brook | Peter Lorre | Peter Ustinov | St. Peter's Basilica | Peter Kropotkin | St. Peter | Peter Fonda | Peter Kay | Peter David | Peter Mandelson | Peter O'Toole | Peter Allen | Lord Peter Wimsey | Peter Sellars | Peter Schreier | Peter, Paul and Mary | Peter Davison | Peter Singer | Peter Maxwell Davies |
Soloists come from inside and outside the community and have included Bernadette Peters, Peter Cetera, flutist Randolph Bowman, soprano Kara Shay Thompson, mezzo-soprano Catherine Fishlock, baritone William Henry Caldwell, the Cincinnati Boychoir and violinist Timothy Schwarz.
He is best known for working with notable musicians such as Richard Marx, Chicago, Peter Cetera, Madonna, Agnetha Fältskog and many others as a session musician and songwriter.
He worked with Marie Osmond on her 2007 Magic of Christmas tour, and has also toured with Tom Jones, Jim Messina, and Christopher Cross, Tanya Tucker, Peter Cetera, Sheena Easton, Patti Austin, and Amy Grant.