Bryan Alexander

USA TODAY

%27The Making of Frozen%27 is a song and feature available on the Blu-Ray/DVD release available March 18 %28and digatally Feb. 25%29.

Bobby Lopez and wife Kristen Anderson-Lopez say they were inspired to write after people constantly asked how the film was made.

The song and video are previewed on USAToday.com for the animated hit which passed %24900 million at the box office.

A lively new song has broken through the ice of Disney's animated hit film Frozen as it heads to DVD.

Oscar-nominated tunesmiths Bobby Lopez and Kristen Anderson-Lopez are unveiling The Making of Frozen, a song and behind-the-scenes video that will be available on the film's Blu-ray/DVD release March 18 (and for download Feb. 25). The video features some of the actors who voiced the parts in the film, including Jonathan Groff (Kristoff), Kristen Bell (Anna) and Josh Gad (Olaf the Snowman), as they dance and sing on the Disney Studios lot in Burbank, Calif.

The production is so elaborate that High School Musical director Kenny Ortega was drafted to direct the video.

"We were lucky enough to have three of the stars of the film who serve as tour guides for the 'making of'' experience," says Bobby Lopez. "There were huge cranes with cameras on them for the shoot, dozens of assistant directors running around with headsets. It was like Disney animation turned into an old Hollywood musical."

The Lopezes, whose Frozen number Let It Go is nominated for a best-original-song Oscar, say they were inspired to make the video since they are constantly asked how an animated movie comes together. Kristen did some research, and "once we finally had all the information in our head, at that point the song bubbled out of us."

The video showcases the singing and dancing talents of the cast, all of whom are stage vets. Broadway star Groff (Spring Awakening, and HBO's Looking) only has a short song in Frozen, so he enjoyed belting out the new tune and dancing during the video's two-day shoot.

"It was nice to sing a bit longer. But the greatest thing was that Josh, Kristen and I never were in the studio together initially," he says. "Here we got to spend some 12-hour days together and really formed a bond. There was a lot of laughing."

The video also features dancing cameos by Disney chief creative officer John Lasseter and Frozen director Chris Buck. Groff even grabs co-director Jennifer Lee for a dance.

"At first I thought, how will they make a song about 'the making of Frozen'? Now I cannot get it out of my head," says Groff. "Kristen and Bobby are on fire right now with their composing. They are in a creative moment."

Bobby Lopez has a dancing moment as well, next to his exuberant wife, who admits she is "a ham."

The duo are mum on further collaborations, saying only that a stage version of Frozen is in the planning stages. Disney officials, however, are considering a sequel to the movie, which has earned more than $914 million worldwide since its Nov. 27 release.