I am willing to do small projects unpaid, but depending on the scale, I will require payment. If the project is interesting, I can do 30-60 seconds of looping music free, but I will retain the commercial right to that music. (If it's a game that is completely free, you can use the track for free. But you won't be able to, say, put that music on an album and sell the album separate from the game. That would require a commercial license.) For commercial use on a single project, I typically find $25 per song fair. If you want exclusive commercial rights to the music, I'll expect $50.
My discord: shadesmar#5212