Theme from Super Mario Bros.

(posted after watching a video clip of an energetic performance of this by a friend on the piano)

Theme from Super Mario Bros.

From the video game by Nintendo.

First released 1985.

Composed by Koji Kondo.

(from Wikipedia)

Calypso rhythm. Lively and catchy.
Lots of syncopation.
Interesting changes in harmony.
Surprisingly popular with a huge international following.
 
Wiki link here.
Transcriptions by Philip Kim here.