Lots of suggestions for you
The graphics were so sketchy. I can tell you have artistic talent but you don't want to make too many drawings or do a lot of work, you just want to use one drawing and tween it across the screen or use a repeated movie clip over and over to show people playing instruments.
I have several suggestions for you. This one almost got blammed, your lucky it didn't. I think that the main reason it almost got blammed was because of your pathetic author's comments. Whenever you combine the statements "I'm new at this," "I hope this doesn't get blammed," and "I tried my hardest," it says "BLAM ME!" to 80% of NG users. Work on that next time. Also to get rid of the sketchiness, try doing some FBF stuff and raising the framerate.
One final word: for god's sake, get a good song!