Totaka's song

[Evanpik64]

Composer Kazumi totaka has hidden this song in almost every game he has worked on and can only be found under extremely specific circumstances.
It has been discovered in Mario paint, Pikmin 2, luigi's mansion, yoshi's story, and even the Virtual boy Wario land to name a few.

Here is a full list of games and more info:
http://en.wikipedia.org/wiki/Kazumi_Totaka

This series of videos covers it well: