Hear Anna Kendrick sing as Cinderella in "Into the Woods" clip

Disney has released the first full-length song from the upcoming "Into the Woods," and it showcases Anna Kendrick and her pitch-perfect pipes.

Kendrick, as Cinderella, ponders a decision she has to make while singing (and also sitting) "On the Steps of the Palace."

Die-hard fans of the Stephen Sondheim musical will notice some of the lyrics have been changed slightly -- something Sondheim had a part in, according to Kendrick.

"I had a really great and unique experience with Sondheim because he was changing the lyrics slightly to 'Steps of the Palace,' so I got to work closely with him on that," she told Playbill earlier this year. "And, by closely, I mean, he was around giving me new lyrics, and I stood there and tried not to mess them up! That was obviously really exciting to realize that the material was still living and breathing and that I got to be a part of a song that was changing for the film adaptation."

"Into the Woods" opens in theaters on Dec. 25. You can listen to the full song below: