Needs more effort/originality
K, the only decent thing was the banana spinning. Try more stuff like that. As in more frame by frame animation.
Other then that
The song is not yours.. so I can't give you any kudos for that
The sequence of events was exactly the same as the actual video for I've Got Some Falling To Do, even down to the band playing in the sky, and the banana spinning (in the actual video, the guy is front flipping, me thinks).. so zero originality there. Even your characters weren't original (actually this I am only assuming... you just said that it is the Banana Comics version of this... so I'm assuming that the characers in the Flash are from the Banana Comics thing)
You say this was to practice your animation skills? Even if it was just that... there was not much animation in there. Like I said, the spinning banana was acceptable, but everything else.. like the drumming and the lip syncing... well... you could've put more effort into it if it were just practice. Practice is like, training, right? When you train you should really test your limits. The best thing in that was the spinning banana, so you should've tried more stuff like that, me thinks