Capaldi, who along with other members of Traffic was inducted into the American Rock n’ Roll Hall of Fame last year, died in his sleep early Friday at the London Clinic, where he was being treated for stomach cancer, spokeswoman Judy Totton said.

His wife, Aninha, two daughters and other family members were with him in the clinic, Totton said.

Capaldi was born in England to an Italian immigrant family and formed the psychedelic rock group Traffic with fellow musician Steve Winwood.

The band, whose motto was “to sound like the same group but never to sound the same,” had hits with “Paper Sun” and “Hole in My Shoe” in 1967 and enjoyed multi-platinum success with 10 album releases.

The group, which also included Dave Mason and the late Chris Wood, split in 1974, but Capaldi and Winwood reformed in 1993 to make a new album.

Capaldi also enjoyed a successful solo career and worked alongside artists including Eric Clapton, George Harrison and Paul Weller.

He achieved chart success with a version of Roy Orbison’s “Love Hurts” in 1975 and penned the lyrics to reggae anthem “This is Reggae Music.”

Capaldi’s friend and manager for 26 years, John Taylor, said the musician would be sorely missed.

“He was one of the most influential songwriters, not only of his generation but in the history of popular music culture,” Taylor said.

“He attacked life with energy and passion and left a rich legacy. He leaves a benchmark for today’s writers and musicians to emulate.”