Wesley Case, The Baltimore Sun">

Virgin Mobile FreeFest releasing 1,000 extra tickets

We didn't see this coming:

Virgin Mobile

just announced they will release 1,000 extra FreeFest tickets on Friday.

The $20 "Karma" tickets will only be available at the Merriweather Post Pavilion South box office and the 9:30 Club box office from noon to 6 p.m. (or until they run out) Friday. There will be a two-ticket limit.

Proceeds will go toward the Re*Generation House, Virgin Mobile's new homeless youth shelter in Washington. This is a final push so the shelter "won't have to worry about funding for at least two years," according to spokeswoman Audrey Fix Schaefer.

For this year's FreeFest,

Jack White

, Skrillex, Nas, M83 and more will perform at Merriweather Post Pavilion on Saturday.