Grey's Anatomy star Ellen Pompeo makes an appearance on The Ellen DeGeneres Show today, and when she does, she'll reveal details about the Grey's musical event.

The show returns March 24 (see photo gallery) with new episodes. A week later, March 31, the long-awaited musical episode airs. Love or hate the idea, it's happening.

"When Shonda [Rhimes] presented the idea, of course I did my eye roll and the 'Oh, brother" that comes along with it," says Pompeo, who wasn't the only one.

"Then we read it and I have to say, I think people are going to love it.

Pompeo says the way it unfolds "isn't typical ... there is some singing and dancing but basically we're taking songs that the show has made famous like The Fray and Chasing Cars and those kind of songs and we're singing them. So it's the music you're used to hearing."

There's also this exchange:

DeGeneres: Do you sing?
Pompeo: I mean, they made me.
DeGeneres: That's the disclaimer right there?
Pompeo: Yeah, they made me. I didn't have a choice.
DeGeneres: It just seems odd because at the hospital, there are very serious things going on and while someone is lying there with a broken arm or bleeding and you all are singing and dancing, it seems rude.
Pompeo: It does and that was my whole thing too. Somebody is in a coma and it is their dream.
DeGeneres: Oh, I see.
Pompeo: The focal point of the episode is Sara Ramirez who play Callie. She won a Tony for "Spamalot" so she can really sing so she does the bulk of the singing.
DeGeneres: It's good that the person in the coma wanted that person to sing.

Should be a fun interview. Are you excited for the musical?

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.