 The 2013 edition of Gigantour featured Black Label Society, Hellyeah, Device, and Newsted as opening bands.At the final show, Jason Newsted, Metallica's former bassist, joined Megadeth onstage to perform "Phantom Lord", a song Mustaine had co-written during his stint with Metallica.Early in 2014, Megadeth was slated to play the Soundwave festival in Australia, but pulled out over a disagreement with tour promoter A. J. Maddah concerning the band's sideshows with Newsted.