Wilco singer-songwriter Jeff Tweedy has entered rehab for addiction to painkillers, a spokeswoman for the band said. The treatment follows Tweedy's battle with migraine headaches, spokeswoman Deb Bernardini said in an e-mail.

To accommodate his recovery, the band's label, Nonesuch Records, has moved its release date of Wilco's latest album, A Ghost is Born, from June 8 to June 22, Bernardini said. The band, known for its idiosyncratic sound, was the subject of filmmaker Sam Jones' 2002 documentary I Am Trying to Break Your Heart.

The film follows the band's making of the album Yankee Hotel Foxtrot and its record label's decision to drop them.