Kazumi Totaka's song is a tune played in many Nintendo games. First found in Animal Crossing as an easter egg. Then Nintendo players started to find the tune in many other Nintendo games, such as Mario paint, Luigi's Mansion, Pikmin 2, ect. There are more games believed to have the tune, but no one has found them yet, including Wave Race 64.
The short song is made by the voice of Yoshi and Nintendo Music director, Kazumi Totaka.
These are clips of a few games that have Totaka's song in them: