Undergraduate /
"education is useless because it dulls our personalities." required supplement [15]
I would add more to how you can contribute. You established why they are interesting to you well enough already. For example, establishing a upenn rock band is fine but it isnt really a wow factor. Upenn might already have a myriad of school rock bands already (IDK, im just speculating but do you get my point? it isnt super special that an ivy league school would be like yeah this is a great reason why we shoul take this applicant in). Is there something special about the music you create? Is it culturally different or something? Not too sure about the Upenn Jazz. It seems added in at the last minute but you can keep it.
I look to pursue this attraction to music in University of Pennsylvania as an undergraduate:
In addition to social communities at University of Pennsylvania, I would also like to participate in Penn international business volunteers (PIBV), as one of the academic communities at UPennthis last part isnt necessary .
Well, thats all the revisions I can think of for now until you post your revised essay that is. Also, I hope dont sound too condenscending either. Bear in mind that even if you dont have a OMG WOW Essay, if your still academically qualified, you still have a shot. Good luck :)