You Never Can Tell

"You Never Can Tell" by Chuck Berry (covered by A. Caveman & The Backseats in-game) was going to be featured in Just Dance 2015 but was removed for unknown reasons. It later made an official appearance in Just Dance 2016 and Just Dance Now.

Dancers
The routine is performed by a woman and a man.

Just Dance 2015 (Beta)
In Just Dance 2015, it can be seen that both of the dancers' skins were in a darker white and looked more realistic.

P1
P1 was going to wear a dark brown leopard skin toga and some dark brown leopard skin leg warmers, a bracelet, and a necklace with yellow dinosaur teeth. He also had a beard.

P2
P2, a woman, who also had black hair, was going to wear a yellow bone accessory for her hair and bra, an yellow bracelet, and had a orange fluffy skirt, bra, and boots with yellow lines.

Just Dance 2016
In Just Dance 2016, they now have different and lighter color schemes.

P1
P1 's hair, bracelet, toga, leg warmers, and tie are now lightly colored, and the dinosaur teeth on his necklace are now red.

P2
P2 's hair is now lighter, and her bra, skirt, and boots are now golden. Also, the bone accessories on her hair and bra are now red, along with her bracelet.

Just Dance 2015 (Beta)
From what can be seen in the square found in the files, the background was set to take place in a house made out of rock. There was a TV, a pinkish-purple leopard carpet on the floor, a fireplace, and a plaque with a green cartoonish dinosaur head. Also, there is some sort of light that can be seen behind P2 in the square, which was possibly the exit for the house or was a window.

Just Dance 2016
The background is a black wall with brightly colored neon caveman drawings.

Gold Moves
There are 3 Gold Moves in this routine, all of which are the same:

All: P1 put your right hand in your head. P2 lift your right leg, put your right arm in your chin and touch P1 with your other hand. This is done from P1 to P2.

Trivia

 * This song was originally going to be in Just Dance 2015, as its files were found in the archives.
 * This is the second HD song to be remade for another game, after We Can't Stop.
 * The song's Just Dance 2015 square can be seen on the icon of playlists, as well as during Autodance saving and sharing, and downloading content.
 * The routine recycles a few moves from Ring My Bell.
 * The Gold Move pictograms have an orange outline instead of a golden outline.
 * P2's avatar on Just Dance 2016 still has black hair, although the coach's hair has actually been changed to dark brown. Plus, the avatar's outline color is red, while the coach's outline is magenta in the routine.
 * In the Just Dance Now files, a golden and diamond version of P2's Just Dance 2015 avatar can be found.