Elton John Recording Album With Leon Russell

In an unexpected pairing, Elton John and Leon Russell are recording an album together in Los Angeles with producer T-Bone Burnett. Both artists have written songs for the project, which has no title or release date as of yet.

Billboard.com has learned that Neil Young, Booker T. Jones, Marc Ribot and Jim Keltner are among the guests who have contributed to the album.

According to a post on the Web site of longtime Elton collaborator Bernie Taupin, 15 songs have already been put to tape, "from Stones-like rockers, country-tinged ballads, gospel and even a Sinatra-like weepy similar to something torn from the grooves of 'In the Wee Small Hours.'"

"It's varied in scope and drenched in a rich tapestry of atmospherics," Taupin says. "Don't expect to hear the old EJ/BT sound; this is organic recording unlike anything you've heard from our duo before."

John's last studio album was 2006's "The Captain and the Kid." He is winding down a spring tour with Billy Joel and has solo tour dates on tap all the way into September.

Russell, 67, has been largely out of the spotlight in recent years, releasing albums on his own Leon Russell Records label. He underwent brain surgery in January but Taupin says "his playing is masterful as ever and his contribution to the project grows more exciting with the passing of everyday."