Celebrated singer/songwriter JJ Cale has died at the age of 74.

The musician passed away at Scripps Hospital in La Jolla, California on Friday (26Jul13) after suffering a heart attack, according to an announcement on his personal website.

Born John Weldon Cale in Oklahoma, he adopted the name JJ Cale to avoid being confused with John Cale of the Velvet Underground and helped create the Tulsa Sound, a musical style which combined blues, rockabilly, and country.

He became famous in the 1970s, when Eric Clapton covered his songs After Midnight and Cocaine and the pair collaborated on 2006 album The Road To Escondido, which won the Grammy Award for Best Contemporary Blues Album in 2008.

Cale released 14 studio albums but enjoyed greater success as a songwriter than a singer, penning popular tracks for Tom Petty, Carlos Santana and Johnny Cash.