(For those of you who aren't huge nerds and check Pitchfork every three hours; you have to read this; hilarity)

by Paul Thompson and Amy Phillips

Anger! Depravity! Experimental pop music! Apparently it's all there in droves at a live performance by the scariest band working today, Nickleback, I mean, Animal Collective.

After Animal Collective played Philadelphia's Starlight Ballroom on Friday night, Sean Agnew of Philadelphia concert promoters R5 Productions received an e-mail from an angry mother of an attendee. He was kind enough to share it with us.

It reads: