idk much about clearnet trackers, so you'd probably wanna go ask around in the piracy instances (dbzer0 is a prominent one, though it's my root instance, so i'm biased lol) for some information on that. But one very real option that you have is just posting the magnet link in the clearnet, since it's not copyrighted material (well, you own the copyright, and you legally allow it to be distributed as such, so it's not like the government is going to whack you upside the head or anything) Makes it easy to get and disseminate, though you would benefit from having it on trackers obviously. Though one really cool thing, is that trackers are pretty autonomous, so chances are if you release it, and it gets significant enough traffic over the clearnet, or attention from nerds like me it'll probably make its way to trackers organically. I make no guarantees but if you give me a shout i can have a look into spreading it onto i2p as well. (you should probably mention that somewhere in the thing so that way people pick up on it)
Oh and uh one other little thought, you can always put a little tidbit in there like "feel free to send us a few bucks, or share this song with your friends" to promote natural growth of it. There's about as much flexibility to it as you can imagine.
oh and a final note if you aren't familiar, probably worth being careful about tracker IP leeches, they often just nab ips that visit public trackers and yeet them to ISPs on the regular, shouldn't get you in trouble since its your own material, but they don't care, and the ISP will just send you a cease and desist saying "hey don't do this" or in extreme cases, yeeting your ass. Again, check out the piracy instances, they have useful resources for this stuff.