This week, Weezer celebrated the release of a new album by hooking up with Gossip Girl's Leighton Meester, and Steven Tyler hinted he may leave Aerosmith for a solo career. Meanwhile, the saga of Chris Brown and Rihanna continued with two revealing new interviews.

These stories, plus the week's top news, photo galleries, audio/video, and live reviews, below.

This week, lucky Michael Jackson fans saw the first screening of This Is It and Strokes frontman Julian Casablancas released his debut album. Meanwhile, Jay-Z and Alicia Keys dueted for 55,000 fans at Yankee Stadium, Against Me! frontman Tom Gabel discussed the band's new album, and Sublime played their first concert in 13 years.

This week, Lil Wayne plead guilty to felony gun possession charges and Nirvana fans got a peek at the upcoming concert DVD Live at Reading. Meanwhile, the CMJ Music Marathon invaded New York City, Slayer talked about their new record, and SPIN honored the sixth anniversary of Elliott Smith's death.

This was a week for the Monsters. Where the Wild Things Are's giant creatures joined Yeah Yeah Yeahs singer Karen O at a special movie screening, Lady Gaga announced her "Monster Ball" tour, and the Monsters of Folk kicked off their U.S. tour.

These stories, plus the week's top news, photo galleries, audio/video, and live reviews, below.

This week, Vampire Weekend leaked the first single from their upcoming album, while Death Cab chased vampires in their new song from Twilight sequel New Moon. Plus, Chris Cornell joined Pearl Jam onstage, Pavement announced a new show, Austin City Limits rolled into Texas, and much more.

This week, Thom Yorke and Red Hot Chili Peppers bassist Flea formed a new group, Paramore kicked off their U.S. tour, and Pearl Jam earned their first No. 1 album. Plus, Weezer teamed with Lil Wayne, Grohl/Homme/Jones supergroup Them Crooked Vultures rocked Austin, and much more!

These stories, plus the week's top news, photo galleries, audio/video, and live reviews, below.