Following frontman Jeff Tweedy's recent entry into rehab for painkiller addiction, Wilco has canceled its upcoming Coachella festival appearance, plus a number of other spring shows.

Following frontman Jeff Tweedy's recent entry into rehab for painkiller addiction, Wilco has canceled its upcoming Coachella festival appearance, plus a number of other spring shows. Eight concerts have been crossed off the schedule, starting with an April 21 show at the Blue Note in Colombia, Mo. and ending with the scheduled May 1 appearance at Coachella in Indio, Calif. Tickets will be refunded for all affected concerts, except for the festival.

Wilco is now slated to kick off its tour -- supporting its forthcoming Nonesuch album "A Ghost Is Born," due in June -- May 28 at Barcelona's Primavera Sound. A June 21 gig at the Bonnaroo festival in Manchester, Tenn. is still planned.

At deadline, Paul Tollet, head of Coachella promoter Goldenvoice, was unavailable for comment. It is unclear whether Wilco will be replaced with another act in the festival's lineup.

A note on the band's official Web site reads: "Our sincere apologies for any inconvenience this may cause. We fully expect all dates after May 1 to go off as scheduled."

Wilco has also pushed back the release date of "Ghost" from June 8 to June 22 to accommodate Tweedy's time in rehab.