Attendees of this year’s Worldwide Developers Conference (WWDC) have been invited to a Thursday night performance by Vampire Weekend. This is the second time the New York-based group has performed at WWDC, according to 9to5Mac.

In a note to attendees, Apple says:

Here’s one great reason to give your Mac the night off. Vampire Weekend will perform at Thursday night’s WWDC Bash. The party starts at 6:00 p.m. at Yerba Buena Gardens.

As part of the event, attendees are allowed to download two songs by Vampire Weekends via iTunes for free.

Vampire Weekend, which also performed at WWDC 2010, recently launched a new album, “Modern Vampires of the City.” The album was originally made available for free through iTunes streaming prior to its release.

Take a look at Vampire Weekend in action:

Incidentally, an Apple developer at WWDC has told AppAdvice that Vampire Weekend music is not yet available through iTunes Radio. Somewhat amusing, don’t you think?

To purchase “Modern Vampires of the City,” click this link.