Another famous tune from the old Mario is Missing! for the NES.
Can be used in friendly, upbeat levels as well as happy environments. Could suit 8-bit levels too.
Huge thanks to brickblock369 for helping with the ADSR.
Without him the song wouldn't sound as good ;P
Notable people that helped with the song:
Update: Minor Optimizations, Added another Version, togglable inside the .txt file by changing the Version number.
V1 being a more waltzy march styled song, while V2 is a more general bouncy feeling song that could best fit switch palaces.