On the final night of Metallica's four-show 30th anniversary celebration, Megadeth leader and former Metallica guitarist Dave Mustaine joined his former bandmates onstage for five songs. You can check out video of Mustaine performing "Phantom Lord," "Jump in the Fire," "Metal Militia," "Hit the Lights" and "Seek & Destroy" below.

Earlier this month, Megadeth performed at the Maquinaria Festival in Santiago, Chile. Pro-quality footage from the performance has been posted online, and you can check out select clips from the band's November 12 show below.

If you've already watched our interview with Slayer guitarist Kerry King from Yankee Stadium, then this news will come as no surprise, but for those of you who haven't heard yet, Megadeth were all set to pull out of the Big Four show at Yankee Stadium this past week.

In case you can't wait til TH1RT3EEN drops on November 1, you can now stream the album's first single, "Public Enemy No. 1," on the band's official website as well as hear it below via YouTube.