The original Tetris theme song is almost as iconic as the game itself. So much so, that it's easy to forget where the music originated from, and just how much it has evolved over the years. First and foremost, the true name of the Tetris theme is Korobeiniki (the Russian word for peddlers), and it was initially created as a poem by Nikolay Nekrasov in 1861.

In 1989, Hirokazu Tanaka remade the song for the Nintendo Game Boy version of Tetris. From there, the theme firmly cemented itself as one of the most recognizable tracks in gaming history.

https://tetris.com/article/9/the-history-of-the-tetris-theme-music