From Sonic Adventure 2 Greatest Hits Revisited by Sonic4ever. I didn't make this, I just edited it so it would loop nicely for a while.
You can find the full album here: sonicisreal.bandcamp.com/
I wanted to use this as background music for a vid I'm making but I needed it to loop cleanly. So I fired up audacity and worked some magic and here we are. Figured I'd distribute it to the masses. If you like this, do check out their album, it's good.
Also I'm probably gonna make a .brstm file out of this eventually so that you can use it as background music in Project M. Or Project+ now, I guess. I'll edit the description with a link once/if I do.
oh and here's the link to the .mp3 so you don't gotta rip it if you want it: bit.ly/34W8LUP