If you want to hear Elton John's duet with Lady Gaga, you'll apparently have to buy a movie ticket.

The soundtrack version of "Hello Hello," the slow-tempo pop ditty written by John and Bernie Taupin for the upcoming animated film "Gnomeo & Juliet," only features the Rocket Man, while the rendition including Lady Gaga is only in the movie. A spokeswoman for Buena Vista Records confirmed the duet is only in the film and wouldn't be released on radio.

John said in an interview that he asked Gaga to join him for the song last year after she performed at a charity benefit at his home in England. Their collaboration could end up on her upcoming album, "Born This Way," though it's unlikely because the duo aren't labelmates. A spokesman for Interscope, Lady Gaga's label, declined to comment.

Lady Gaga is expected to perform the title track from "Born This Way" on Feb. 13 at the Grammys, the same awards show where John joined Lady Gaga last year for a mash-up of her "Speechless" and his "Your Song." John said he's heard "Born This Way" and called it "the song that will wipe 'I Will Survive' off the map." Lady Gaga released the song's lyrics on Twitter last week.

"Gnomeo & Juliet" is scheduled to debut Feb. 11. The soundtrack is set for release Feb. 8.

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