{blackbabes} Rita Ora and Matthew Morrison tune up for duet

While You Were Sleeping / Little Women (1994) / Wrapped In Red - Kelly Clarkson

"Glee" star Matthew Morrison and Rita Ora were seen singing together backstage at the AMAs before he tweeted the news that Ora will sing on a concept album for his new musical, "Finding Neverland."

Spies said the pair were "singing an a cappella version of Iggy Azalea's 'Black Widow' [which Ora's featured on] with Jamie Foxx and his daughter, Annalise."

Jessie J is also doing the album, and "Finding Neverland" composer Gary Barlow will perform with some of the cast on "GMA" on Thanksgiving.

The Muppet Christmas Carol / A Christmas Carol / A Mary Christmas - Mary J. Blige