Good start
Over all the script was decent and had funny moments.
Only thing I would say is work on your animation and drawing of coarse and the sound. The people doing the voices need to work on putting more expression into thier voices, so it fits the scene.
And sometimes you stay on something too long. Like the dancing barbershop song. Didnt have to do the whole thing. Or the robot fell over and sparks are flying. Stayed looking on that too long.
But over all you did good. It kept my attention. And I had fun watching it.
Keep em coming and get with some one who can teach you about art and animation to polish them.