Conor Oberst ropes in some of his mates

Bright Eyes are busy in the studio working on their next album.

The as-yet-untitled album is due for release in spring 2007, reports Billboard.

Conor Oberst‘s band have 25-30 songs to choose from, 12 of which are expected to make the final release.

The record will feature guest appearances from drummer Janet Weiss, M.Ward, Gillian Welch and Sleater-Kinney.

Bright Eyes will perform at the Bonnaroo Festival in Tennessee on June 16.