Very Interesting!
Everything about this picture looks unique.
I love how you've given all the characters their own style, straight out of a different era for each, and although I cant name them all, I'd say the drum kit looks like something the Beatles would use.
The colour in this pops out wonderfully and all the shading and shadows looks great. I really cant fault it there, I can tell you've put a lot of time and effort into it.
Everything has a good level of detail to it, whether its the floor and walls, or the clothes that the characters are wearing, and the background also looks similar to the skyline in the Newgrounds logo.
I'm not great at art reviews so there's not really much more I can say, but I really do like this and hope your future work is of this quality!
*Review Request Club*