Thank you so much for the advice about what kind of arduino would be better for this project.
I'm a electrial engineering student on 6° period on college. I've programmed an arduino before, and I also have an "ok" programming knowledge with Javascript, C++, etc.
A simple and basic midi controller would suit "well" on what I'm going to do, I'm really just searching some kind of begining for start making drum machines or another audio machines with arduino as a future hobbie and maybe a future serious job ^^