Palladia, MTV Networks' high-definition music channel, is kicking off 7 days of nonstop mayhem with its "Outdoor Week 2009" concert series. Starting on Tuesday, September 1 viewers can watch the hottest outdoor festivals from the comfort of the cool indoors, as Palladia premieres festivals featuring artists including Bruce Springsteen, Kings of Leon, Lily Allen, Gnarls Barkley, Metallica, Linkin Park, and many more. From the grasslands of the U.K. to the seaside of Spain, Palladia is taking viewers around the world to the biggest outdoor concerts of the year!

Sonisphere 2009 Next, the Sonisphere Festival is rocking out with some of the biggest heavy metal acts in contemporary music. Headliners Metallica, Linkin Park, Alice in Chains and Anthrax are all jam packed into 2 hours of one of the liveliest rock fests the Knebworth House in the U.K. has seen. Palladia will be airing the British edition of the festival, which is held in seven different parts of Europe throughout the summer. Sonisphere 2009 premieres in two parts on Saturday, September 5 and Sunday, September 6 at 9 PM*.

*all times ET/PT