Grizzly Bear / Beach House

Vampires and werewolves and lusty glares from Robert Pattinson aren't the only things fans can't wait to ravish in the upcoming Twilight saga, New Moon. Monday night in Chicago, Grizzly Bear invited Beach House singer Victoria Legrand onstage to perform "Slow Life," their contribution to the star-studded New Moon soundtrack, for a lucky crowd.

The video below lasts for just over a minute but it's already making the rounds of excited fans of R.Patz and indie rock alike.

The highly anticipated album, also featuring new cuts from Death Cab for Cutie, Black Rebel Motorcycle Club, and the Killers, hits stores Oct. 20.

Until then, check out this small taste of "Slow Life" below, first uncovered by You Ain't No Picasso:

WATCH: Grizzly Bear with Victoria Legrand, "Slow Life"