Madonna Reportedly Snags Kanye West, Pharrell For LP; Plus Jessica Sierra, Gym Class Heroes, Radiohead, Ne-Yo & More, In For The Record

Sierra pleads not guilty to charges; Heroes tapped for Warped Tour; Radiohead to end downloads soon.

Metal File: Mastodon, The Bled, Cephalic Carnage, Thor, Glenn Danzig & More In This Week's Hard News

Mastodon don't plan to write any radio hits for their major-label debut.