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Survivor has lost one of their lead singers. Jimi Jamison's booking agent Sally Irwin is confirming that the rocker died Sunday night.  She tells Jimi suffered a heart attack. 

He played his last show just a day earlier, performing with Survivor in Morgan Hill, California Saturday night.  Jamison was 63. 

Jamison came to fame with the band Cobra, and joined Survivor in 1984.  He's featured on several of Survivor's hits, including "The Search Is Over" and "Is This Love." 

Jimi also took the lead on the band's contribution to the Rocky IV soundtrack - the top five hit "Burning Heart." 

Jamison also wrote and recorded the song "I'm Always Here" - the theme to the TV series "Baywatch." 

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