Magma Cavern from Pokemon Mystery Dungeon in 8 entire bits!
Fun fact: This song could be played on a NES. This was a rare example of a time when making it NES compatible didn't really hurt the song much so I went ahead and did that for you guys.
Often times, making a song NES compatible means making it sound awful. That's not a compromise I'll ever be willing to make, so don't get too used o this. D;
Please contact me if you would like to use this in a project. We can discuss the details.