Cool concept! I like that we both thought of ghosts for our game, hahah!
I liked the game, but the music was out of sync for me, both in the web version and the Windows version, making it a bit frustrating to play :(
I also stumbled upon the spikes bug mentioned in the comments below, preventing me from progressing further.
In any case, good job putting this together for the JAM, and I hope you can fix the issues after the voting ends and upload a more polished version :)!
~kiko