'Let It Go' Oscar-winning team write original musical number for host Neil Patrick Harris

Oscar host Neil Patrick Harris and show producers Craig Zadan and Neil Meron announced the Oscar-winning songwriting team from "Frozen," Kristen Anderson-Lopez and Robert Lopez, are in the midst of writing an original multimedia musical sequence, "Moving Pictures," which Harris will perform "Oscar Sunday," Feb. 22, on ABC. Harris made the initial announcement on his Twitter account, posting the network's first tweet using its new mobile video camera feature.

"On the heels of the international success of last year's 'Frozen' and their Oscar for 'Let It Go,' we couldn't be happier to have Kristen and Bobby Lopez write an incredibly special song for Neil Patrick Harris and special guests to perform this year on the Oscar stage," Zadan and Meron said. "YouTube, get ready!"

"We love the Oscars and have always been huge Neil Patrick Harris fans, so when he asked us to write him a song for this year's show we said, 'Yes!' before he could finish the sentence - it's possible he may have been asking us for something else," the Lopezes said. "We are having so much fun collaborating, and have even enjoyed weaving our experience as Oscar nominees into the song."

The 87th Oscars will be held at the Dolby Theatre at Hollywood & Highland Center in Hollywood, and will be televised live on the ABC Television Network at 7 p.m. ET/4 p.m. PT.