A penguin races across the ice from one research station to the next before the clock runs out, jumping cracks and sea lions — to Waldteufel’s Skaters’ Waltz.

Nothing here was transcribed by ear: every note was read out of the cartridge and is played by an emulated NES sound chip — two pulse waves and a triangle, each on a keyboard of its own.

The music and the game belong to their composers and publishers; this site only shows how the cartridge plays it, for learning.