Fact: before you are allowed to purchase an ocarina, you are required to prove that you can play at least one song from the Legend of Zelda series. While ocarinas are certainly charming little devices, these musicians up the stakes and make a plain old ocarina seem downright quaint.
The Tetris theme song is simple but addictive, just like the game itself. That makes it a perfect tune to play on all manner of experimental electronic instruments like stylophones and cell phones. Or just play it on bottles, if you’re low tech. It’s versatile like that.