Motley Crue guitarist Mick Mars’ upcoming solo album will feature some hard-rock heavyweights, says Andy Biersack of the glam-rock band Black Veil Brides. Biersack is among the artists set to appear on the disc.

"I worked on a song with [Mars] for his solo record. It's in the making,” Biersack said on the 'Talking Metal' podcast (via Blabbermouth). “The Motley guys are always touring and always working. So, it's something that's been a work of his for awhile and hopefully in time he will complete it."

Biersack adds that it was a thrill to work with Mars on the album. “I will say one thing: Mick Mars is one of the greatest songwriters I've ever met in my life and had the pleasure to work with. I can't wait to hear his full album. In terms of this record, he's really worked with the heavy hitters in the rock and metal industry."

As for Mars’ health, Biersack says it couldn’t be better. "He really is doing well,” he reveals. “You're sort of fed the story that he's not as strong as he really is by the media or by the people that say that he's been debilitated by his illness, but he's one of the most hopeful and kind people I've ever met in the world." Mars suffers from ankylosing spondylitis, a severe form of arthritis.

Watch Black Veil Brides Singer Andy Biersack Talk About Motley Crue in a 2010 Interview