
Producer Bob Rock, who's been working with the new Mötley Crüe lineup on fresh material, has revealed that Nikki Sixx once harboured doubts as to whether he actually played on band's the first four albums.
Speaking with wrestling superstar and Fozzy frontman Chris Jericho on his This Is Jericho podcast (full broadcast below), Rock revealed that Sixx explained his theory while Rock was working with Mötley Crüe and their 1989 album Dr. Feelgood.