Hidden song in many Nintendo titles

Composer Kazumi Totaka worked on composing the score of first party Nintendo games like Mario Paint and the Animal Crossing series. What do the games he worked on have in common? A single hidden melody. If you go up to K.K. Slider in Animal Crossing you can get the song to play in your house if you request it. But the song is also hidden in Link’s Awakening, Super Mario Land 2, Mario Paint, Yoshi’s Touch & Go as this video explains.