Great White

Fellow musicians including Bret Michaels, Dee Snider and Jack Blades have paid their respects.

"I don't feel better about any of it and I don't think I ever will," he said in 2013.

Vocalist had retired from touring earlier this year.

The former frontman has been diagnosed with Lewy body dementia and multiple system atrophy.

We're rockin' around the Christmas tree and into a long list of rock stars who are celebrating their birthdays this month.