At first I did not get the hang of it and then another comment mentioned to hold the keys down. It was very fun, has great music and artwork. Refreshing gameplay!
 

The title screen, art, and theme were great! I had trouble with the beat mechanics, but otherwise awesome entry.

I have to applaud you for attempting a rhythm game in GameMaker, first of all. I've used GameMaker for a while and I don't think it offers the best audio functions, and unless you use delta time functions I think getting the timing right can be a real struggle. It's a genre I've always wanted to try but have never been sure whether to pick up another engine for it.

This game took me a few attempts without scoring before I finally figured out what was going on. I think you need a few more indicators to show when the player is getting stuff right or on the right track, otherwise getting the "failed!" sound effect over and over just gets a little confusing. I'm not sure how large your timing windows were, sometimes increasing them can help, but I think I just needed a better visual indicator of how far off the beat I was.

That said, when I finally started hitting targets and getting points, I thought the custom animations were rather neat. The art as a whole has a nice colour palette and style. Despite the shortcomings with sound and some gameplay I thought the innovation and interpretation of the film scenes were done really well, nice job :)

I tried playing a few times but to be honest, I couldn't even wash one customer! So I asked my roommate to try it too and he was much better at it than me, he managed to wash a few but he said it was more luck based than precision/rhythm, he couldn't really get the beat and button press time down so he was trying a bit randomly. Maybe add some more visual feedback and/or clearer instructions? (maybe it was just me though!)