Matthew Morrison's debut disc is full of A-list collaborations.

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The 32-year-old actor enlisted the help of frequent Glee guest star Gwyneth Paltrow, 38, who will join him for a rendition of "Over the Rainbow" on his forthcoming album. Morrison previously played an acoustic version of the Wizard of Oz classic during Glee's first season finale.

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"People kind of know me for that song now," Morrison tells Entertainment Weekly. "I wanted to do a duet with a female. I thought that was a good song to do, and we really did a different arrangement of it. It's a lot of strings, and it's beautiful."

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Though the duo have performed together a handful of times on Glee, Morrison was nervous about asking Paltrow to lend her vocals to the track.

"The hardest part of doing this album was asking these people favors, like Elton [John] and her," he says. "I'm so not that guy."

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