The amazingly multi-talented Steve Martin will release his second bluegrass CD, Rare Bird Alert, on March 15.

The musician/comedian/actor/author is backed up by the Steep Canyon Rangers, the quintet he toured with last year, but he is also thrilled to announce that the album features some AMAZING special guests - Sir Paul McCartney and the Dixie Chicks.

Of having the former Beatle perform on the record, Steve told Pollstar.com, "It's very hard to believe. I was a kid when I first heard of Paul McCartney, and if you told me one day that he'd be singing one of my tunes ... I'm still flabbergasted."

Sir Paul collaborates with Steve on the track "Best Love," which is "a love song, but it has a little humor in it."

A "very emotional, heartbreaking" song, Steve claims that the Dixie Chicks agreed to sing on a track called "You" before they had even heard it.

The title of the album was inspired by Steve Martin's upcoming movie about bird watching - The Big Year - which  co-stars Jack Black and Owen Wilson.