This theme was composed by Koji Kondo. The first theme he made was based on an early prototype of the game, which simply showed Mario running around a big empty area. Kondo described this early theme as a bit lazier, slower tempo, and more laid back. As the game underwent changes, he realized that his theme no longer fit, so he increased the pace and changed it around to fit better. Read more about it at
You can play this song with a C diatonic harmonica.
If you want to play along with the original you will need a C harmonica.
It was tabbed by Charles Evans