Did somebody ever emailed Megadeth? Roadrunner has a lot of bands in DLC, and Megadeth are very open to the music game platform(2 albums in RB, a song in RB2 and GH5, 3 songs in GH6 and a pack next week)
We have enough Megadeth, I think..
RB3 Italian Player! http://dlcquickplay.com/user/lunaticsoul PSN: TheUnforgivenII