You’ve probably already seen the train wreck that was the “Metalligaga” performance from the Grammy’s last night. That wasn’t the only mishap for rock bands during the ceremony. Congratulations are in order for Megadeth who picked up their first ever Grammy, but as the band was coming to the stage to accept their award the in-house band decides to play Metallica’s Master of Puppets. Ummmm, maybe they didn’t get the memo, Mustaine hasn’t been in Metallica in years and wasn’t a part of Master of Puppets at all. Mustaine later tweeted about the mix-up “Ah, you can’t blame ’em (the in-house band) for not being able to play Megadeth.” Check out the acceptance speech below where you can also some of the members from Korn in the audience congratulate Megadeth on their win.