Tremendous!
Despite the feeble shunning of your work from other people on this review list I have to agree that theres only one thing I found wrong with that animation. Quality of sound. That's it it just sounds a little muffled you can get much better versions of that song with tons of better quality.
I actually loved the style you chose and I thought that was pretty damn good for a first animation. I tell you what you should do? Do this style again but use different songs from different bands. Funny songs obviously.
I think its a really funny strange little style almost like weebl n bob wierd except its not two eggs sitting hurling words out of their lips and screaming about pie. I think you should continue using the same style because it was enjoyable to watch. Perhaps you could, like some have suggested, give the guys or guy or girl or.....graphic the opportunity to become more active. instead of their faces being the action perhaps give them two dots as hands and give them some freedom!
Otherwise I loved that, fantastic, sorry this is so long. Dont listen to all of the suggestions you get. Yes its constructive criticism but somewhere along the line animations like this are going to become popular and crazy because of how strange they appear. Good luck with your animations! 5/5 10/10