haha. that was really good!
I like the art in general, It seems that your style is to make cartoons that remind peole of the 50´s and so, wich is awesome, I like your combination of colours. Its VERY colorful without being rainbowy.
however, I dont get why dont you make more frama by frame stuff for the transitions of the characters, for examlple, supose the character makes a change from one position to another, in his arms, why not make a couple of frames to simulate the movement.
anyway really nice. I love the music.