Very nice! I loved the character designs, of course, but the environment itself also has a lot of charm, and the music is very apropos.
The gameplay with the second ghost was a little confusing; at least on the web build, a right arrow is the first thing to come down in the very leftmost column, and it's not clear what you're supposed to do. Still, in playing around and experimenting to try to figure that out, it felt like the mechanics have a lot of potential for interesting puzzles? For example, figuring out what turns you need to insert into a dance to make it possible to complete all the steps without bumping into walls, or to get a ghost from one place to another.
Seems like someone wants to cut in?
Overall I enjoyed the entry a lot even though it was very brief, so I hope you're inspired to do more with the ideas!