Before AFI took the stage Friday night, the crowd at the sold-out Epic nightclub in Minneapolis began an impromptu, fist-pumping chant: "Through our bleeding, we are one!"

Not all rock stars spend their spare time consuming narcotics and canoodling with groupies. Boring as it sounds, some actually read -- a lot. And some of what they learn even makes into their music.

It's easy to be skeptical when the term "supergroup" starts getting thrown around -- it usually connotes a battle of egos, an unwieldy split of duties, and, ultimately, music that doesn't match up to the work of the independent parts.

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.

Imagine if Stevie Nicks was raised on the ice planet Hoth by shamans and given unlimited access to lasers, keyboards, tribal costumes, drum and smoke machines, and elongated percussion instruments with feathers attached. Meet Fever Ray, a Swedish outfit that made their U.S. debut at Webster Hall in New York City Monday night.

What if they held a sunrise concert and everybody showed up except the sun?