Let It Go

"Let It Go" by Disney's Frozen is featured on Just Dance 2015. It was leaked on both game covers.

Dancers
They're basically Anna (left) and Elsa (right), with a few differences. Anna wears her pink cape, black and blue dress, and black boots, and Elsa wears her light blue sequin dress.

Background
So far, the background shows snowy swirls. Another one shows the snow covered forest and the dancers surrounded in pillars of ice.

Trivia

 * This is the second Disney song in the main series; the first is Prince Ali in Just Dance 2014.
 * Although she is not credited, this is the first song by Idina Menzel in the series.
 * The dancers have a natural skin tone, similar to Hot n Cold.
 * This song was leaked on both the PAL and NTSC box covers.
 * However, only the NTSC cover mentioned the specific song. The PAL cover only mentioned the 'artist'.
 * The song was revealed briefly in a private YouTube video.
 * The dance is believed to feature several elements from the movie, including the background and the dancers (Anna and Elsa) preserved in their cartoon form.
 * Their gloves switched colors.