Who would ever thought that the Tetris theme song is just hiding in an intercom? In this video, see in action what are the correct combinations as to how to perform the Tetris song in just a few numbers.
It starts with the 7235..
Followed with a 3200..
And another 3753...
And now that the "secret" combination is out, it's time to use them in telephone booths, keypads, cellphones, secret keypad door lock, cash register, calculator, and the list just goes on and on and on.
See full video below: