The cover of 'Juno B-Sides: Almost Adopted Songs' is seen in an undated handout photo. Two months after the soundtrack to the pregnant-teen comedy 'Juno' hit No. 1 on the U.S. album charts, a second volume is being prepared for digital-only release. [Agencies]

Two months after the soundtrack to the pregnant-teen comedy "Juno" hit No. 1 on the U.S. album charts, a second volume is being prepared for digital-only release.

"Juno B-Sides: Almost Adopted Songs," a 15-track collection boasting a ditty performed by star Ellen Page, will debut exclusively through iTunes for a suggested list price of $9.99 on April 8, distributor Rhino Records said.

The album will be available through all digital service providers on May 13. There are currently no plans for a physical release.

"None of these songs made the movie, but they are all essential members of the Junoverse," the film's director, Jason Reitman, writes in the liner notes.

Olympia, Wash.-based singer/songwriter Kimya Dawson, whose music was prominently featured in the film and the first soundtrack, is back with a pair, including a cover of "All I Want Is You," the wistful love tune performed over the film's opening credits.

The man behind that song, children's entertainer Barry Louis Polisar, also returns, as do Scottish band Belle and Sebastian and Buddy Holly. The soundtrack is rounded out by tunes from indie rock bands Yo La Tengo and Jr. James & The Late Guitar, as well as Boston girl group the Bristols, Mexican combo Trio Los Panchos, and Brazilian bossa nova icon Astrud Gilberto.

Page performs "Zub Zub," a song written by the film's Oscar-winning screenwriter, Diablo Cody, for a scene that was eventually cut for time. Page's character bemoans her fate with such lines as "he filled me with baby batter, then we ate some orange tic tacs after."

Reitman said the scene provided one of his favorite memories. "I just remember directing with my daughter strapped to my chest in a BabyBjorn (baby carrier) and the whole crew watching on as Ellen noodled around on guitar."

The original "Juno" soundtrack reached No. 1 on the Billboard 200 in January, becoming the first chart-topper in archival specialist Rhino's 30-year history.