1 Instrument Comp!

Hello, y'all wonderful people of Flat!
Today, I'm presenting you all with a challenge that you've probably never faced before. Don't worry, it's not as hard as it sounds :)
You need to use a single instrument as both a bassline, a melody, chords, and percussion.
Mind= Blown. Ik you couldn't tell from the title
It can't be a "keys" instrument, I. E a piano or a harpsichord, because I can't let you be that cheaty sorry
Submit scores here to be dissected (that sounds dramatic lol)
First two people to ask get to judge! PLEASE I NEED JUDGES. But if you can enter a piece, do that instead. It's more important.
Also, if you're Birdie, I've finally made a comp that you can't destroy hehe
Judges can make up whatever rubric they want, as long as it includes no keys, the 4 parts, and... um idk what else, it's out of 25? Add your scores together to get the final. I recommend one of you to be very harsh, and the other to be like "well this piece included 5 instruments but it's fine because they only used them a little" kind of lenient.
Have fun! That's an order.
Oh, and also, subs should be in by 2022.