All is not well in the world of Aerosmith. After bouts of band in-fighting, singer Steven Tyler has left the Boston group to focus on "something Steven Tyler: working on the brand of myself – Brand Tyler," he told Classic Rock magazine.

Last year, after a few canceled concerts, word swirled that Paramore, the Tennessee pop-punk band fronted by the colorful 20-year-old Hayley Williams, would not survive to see their third album.

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.

Paramore, brand new eyes
Pint-size Tennessee titan makes a convincing case for sincerity.

On a day Hayley Williams should have been so happy she could just scream, the 20-year-old Paramore singer could barely manage a yelp. Her voice hurt too much.

See our photo gallery of the show here.

Their latest SPIN-approved album, brand new eyes, which hits stores today, isn't the only completely fresh in Paramore's universe: Frontwoman Hayley Williams' bright red hairdo is gone! She unveiled a new blonde look in her band's performance last night on The Tonight Show -- watch below!