Biography
William Bradford Champlin (born May 21, 1947) is an American singer, keyboardist, guitarist and songwriter. He formed the band Sons of Champlin in 1965, which still performs today, and was a member of the rock band Chicago from 1981 to 2009. He performed lead vocals on three of Chicago's biggest hits of the 1980s, 1984's "Hard Habit to Break" and 1988's "Look Away" and "I Don't Wanna Live Without Your Love". During live shows, he sang the songs originally performed by founding guitarist Terry Kath, who had died in 1978. He has won multiple Grammy Awards for songwriting.
Bio from Wikipedia
Discography
Records they worked on — most-collected first.

I Am
1979

We Are The World
1985

Chicago 17
1984

Chicago 16
1982

The George Benson Collection
1981

Wet
1979

From The Inside
1978

Repeat Offender
1989

Donna Summer
1982

Middle Man
1980

The Completion Backward Principle
1981

The Rose - The Original Soundtrack Recording
1979

Outside Inside
1983

Jarreau
1983

Breakin' Away
1981

Chicago 18
1986

Rhythm Of The Night
1985

Monster
1980

The Beatnuts
1994

Miami Vice II (New Music From The Television Series, "Miami Vice")
1986

Robbie Dupree
1980

The Wanderer
1980

Chicago 19
1988

Self Control
1984
Credited work
4,938 releases · 599 albums · active 1969–2026
- Performance · 10,584
- Other credits · 437
- Production · 102
- Engineering · 24
Studios: Sunset Sound · Davlen Sound Studios · Lion Share Recording Studios · Studio 55, Los Angeles
