While it was confirmed earlier this week that Device and Disturbed frontman David Draiman stopped by the studio to help Megadeth out with writing, Draiman went out of his way to say that there were no actual guest vocals on the album. However, Mustaine just disputed that via Twitter: “David Draiman ended up singing on Super Collider. It sounds amazing!” Mustaine tweeted.

It makes a degree of sense that Draiman ended up in the studio with Mustaine. Johnny K, who produced Super Collider as well as the band’s last album Th1rt3en, also produced the first three Disturbed albums. Draiman would be the first guest on a Megadeth album since Lacuna Coil’s Cristina Scabbia sang on “A Tout ‘le Monde,” in 2007.