Rock supergroup CROSBY, STILLS & NASH have parted ways with producer Rick Rubin after working with him on an album of covers for the past two years.
Last year (10) Graham Nash told Billboard.com the trio was a third of the way through the album, which will feature CSN renditions of songs by the Rolling Stones, Beatles, Bob Dylan and the Grateful Dead.
But Rubin, who has produced acclaimed comeback albums for Johnny Cash and Neil Diamond, is no longer behind the controls, and the group has also split from Columbia - the label behind the project.
A statement from CSN reads, "We have amicably parted ways with both Rick Rubin and Columbia."
No details about the split have been given, although insiders suggest Nash, David Crosby and Stephen Stills were growing tired of waiting for Rubin to complete other projects, like Kid Rock's new album, and concentrate on them.