oh christ there's this ad for a game on my phone called Slidey: Block Puzzle and it uses the tetris theme.
not just the tetris theme
but a MIDI TRANSCRIPTION OF THE TETRIS THEME
but wait there's more
They haven't correctly sampled the "drum" track so it just plays a low, normal note with a piano patch in place of each of the drums. which you can hear over hte music, and they left that in.
holy fuck.