Scott Ian

The 'Bat Out of Hell' singer died at age 74.

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

You've got to promise not to stop.

These rock and metal musicians have been official members of multiple successful bands, including Ronnie James Dio, Mike Portnoy and more.

Watch the guitarists rock custom made 'Game of Thrones' guitars playing the show's theme.