Language warning: Ozzy drops the f bomb, SHOCKER…for real though, don’t watch at work.

Black Sabbath has posted a three-minute behind-the-scenes video of the making of their new album on YouTube. The album, 13, is their first studio effort with Ozzy Osbourne in 35 years. While you can hear snippets of new music in the background, perhaps the most interesting thing is seeing guitarist Tony Iommi in a baseball cap with strands of gray hair on the side as opposed to his usual jet black dye job. This is likely a result of his undergoing treatment for lymphoma. 13 will be out in June.