During their performance at Hellfest, Disturbed were joined onstage by Mötley Crüe bassist Nikki Sixx, and his Sixx:A.M. bandmates DJ Ashba and James Michael for a cover of Mötley Crüe’s “Shout At The Devil.” You can see that at 35 minute mark in the below video. As an added bonus, you can also watch Disturbed cover The Who’s “Baba O’Reily” with Glenn Hughes as well.