Rock Star Supernova bassist Jason Newsted has suffered a major shoulder injury and will be out of commission for up to nine months, according to a spokesperson. Newsted will require immediate surgery after tearing his left bicep and rotator cuff while trying to catch a bass that had fallen off an amplifier.

The band, which also featured drummer Tommy Lee, guitarist Gilby Clarke and vocalist Lukas Rossi, is still planning to release its debut album Nov. 21 via Epic. Its first tour kicks off Dec. 31 in Las Vegas; the search for a replacement for Newsted is already underway.

"When we started this project, I was handed a list of names -- guys who could potentially anchor our rhythm section," Lee says in a statement. "I responded by crumpling up the paper and asking, 'Where's Newsted?' Jason was always the right guy for this band and we'll miss having him with us as we kick off our album and tour, but we know he'll be back as soon as he can pick up and play."