impressive that you animated the whole thing, you should clean up your lines and it would make the whole thing look neater. most of the frames are just the mouth moving and the words going in and out of frame

it would look better if you had made the lines in the loading screen straighter, and maybe instead of writing all of the words, use text instead.

Pretty alright animation, the only thing I'm not that big a fan of is how sometimes it'd be a still frame for more than a few seconds. I think if you animated little things like the character's tie flapping in the wind in more scenes or added some backgrounds, this thing would be more fun to look at.
Keep going at it though! I can tell you're really passionate about animation, and I'm excited to see more music videos like this from you.