I was going to do this by myself, but I could definitely use help making sounds/music.
That is, if you're ok with working with a game that I'm mostly making from scratch using SFML and C++, so it might be a bit of a slow start.
If you do want to team up, you can just work on sound/music/sound design. Or you can also help with game design/brainstorming & even programming if you want (I'm most likely going to use Lua scripting for handling all the higher level stuff like which events happen and what objects/sounds/images to create when etc. so if c++ isn't your thing that's ok)
As for me, here's a game I made for a game jam last year https://felixnemis.github.io/ICTjam2/src/index.html