P1 is a light blue-skinned, female alien with three pink strands on each side of her head that stick out and then drop down. Occasionally throughout the song, waves of what seem to be electricity flow through the strands from the root to the tip. Her forehead is large, causing her head to look slightly like an upside down pear. She also has a yellow crop top and skirt, an orange collar, yellow socks, and black wedges. She has two long tentacles sticking out of her head that seem to start where her ears would be that fall over her shoulders. She has one giant eye with a pink iris, and black eyelashes on the top and bottom. Her left arm has two orange pads: one above her elbow and one on her wrist. She has black lips.
P2 is a male astronaut wearing a white spacesuit. He has a black shield on the helmet, and two pads stick out around the ears. There are two bright yellow stripes around his elbows and knees. He has a thick white line that goes all the way around his chest. A black line that goes from the bottom of his helmet all the way down separates them. There are two pink pads on his suit: One near his left shoulder and one in the shape of a triangle over his right breast. On his back, he has a box with two tubes coming out of it. The tips of his glove are red.
The background is in space with the dancers on a floating, broken part of a satellite. Some random things float around, such as bubblegum pieces, wrenches, a radio, a bottle with a binary code on it, and a sign with "Them" and "Us" on it ("them" referring to Earth and "us" referring to the aliens), and another similar sign that reads "Destiny" and "Dream". There are also a lot of stars in the background. At the end of the routine, the camera zooms out and there is a piece of rubble on the platform that says, "Just married".
There are 2 Gold Moves in this routine:
Gold Move 1: Fall into your partner's arms. It begins from P1 to P2. Gold Move 2: Slowly bring both hands down. It begins from P2 to P1.
Only You (And You Alone) is the second song by Love Letter in the main series.
However, this is the first one to be a cover.
Being released in 1954, Only You (And You Alone) is the oldest song in Just Dance 2015.
When the preview gameplay was initially uploaded to Just Dance’s YouTube channel, the original version of the song was used.
The previews were removed on June 10, and the footage was recorded again with the cover replacing the original version.
In the final one, the song title is only displayed as Only You.
On camera consoles, for the Classic routine, certain moves meant for P2 are not counted. They are, however, counted on the Community Remix.
There is a pictogram error on Just Dance Unlimited, where Gold Move 1 is counted for both coaches, even though it is only counted for one of them at a time.
In the background, there is a glass bottle with a note with a binary code that reads "0110001". However, this does not translate to anything, since all binary code characters are eight digits long, while this one is only seven.