“Happy Birthday” (Traditional) is one of the folk songs in the Ocarina Bard library. Here’s its tab for the ocarina in The Legend of Zelda: Ocarina of Time on Nintendo Switch: every note shows which button to press (L, R, A, Y or X) and whether to move the stick or the D-pad.
It has 25 notes; 2 of them use the D-pad for half steps.
It also has a second voice: turn on duet mode to play it with a friend at the same time.
You can listen to it, change the key and tempo, share it and download it as an image.
L L L↑ L R↑ R✚↑ L L L↑ L A A↓ L L X Y R↑ R✚↑ L↑ X↓ X↓ Y A↓ A A↓
↑/↓ = full stick · ✚↑/✚↓ = D-pad · — = rest