Megadeth, Mot?rhead, and Rammstein are among the confirmed bands to perform on Sunday, May 30 for Portugal's Rock In Rio festival at Bela Vista in Lisbon. Megadeth will kick off its 30-date European summer tour at the festival on Sunday night taking the stage at 10:00 PM. The month-and-a-half long trek which includes the 7 'Big Four' shows (Metallica, Slayer, Megadeth, Anthrax) in June will wrap up in Haapsalu, Estonia on July 16. For more information see the Killing Road.