Alright, but boring.
The dancing/singing joke was overplayed just a bit too much. I'd remove the car crash scene, since that was where the joke became worn out and unfunny to me. I feel that leaving in the last dance would be fine, since there's enough of a pause that you don't entirely expect it, but having the same joke done (slowly) four times in a row was too much.
I will say however, that when the mask guy started dancing/singing it was the most hilarious thing I've seen all day. Totally caught me off guard. great job :)
So, all-in-all, there's room for improvement, but it's not that bad. I'd just suggest you work on the slow pacing/repetitiveness a bit more, and you'll have a great product!