The "Harry Potter" star says he'll perform the song "Brotherhood of Man" from his Broadway show "How to Succeed in Business Without Really Trying" early in Sunday's telecast.
Says Radcliffe: "I think we're one of the first, if not the first."
Radcliffe revealed the news Monday while welcoming hundreds of New York City students as they made their Broadway debuts — performing routines from musicals on the Majestic Theatre stage.
Radcliffe was passed over for a Tony nomination, but says he's pulling for co-stars John Larroquette and Tammy Blanchard, who are up for awards.
"If John won it would be just amazing," he says. "Only because I have a lot of scenes with him."
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