Elves

Overview
Elves are small, snail-like creatures that don't seem to have a role in the story, but serve as minor unlockable items with insights to the story that appear in all stages, except for Colorful Festival and the ones in Gift Music. There is also a variation of elves that, when tapped, show the various cutscenes before each stage in the overworld map. Although, the last elf on the map shows a preview for the next chapter.

Their gender is undefined.

Colors and Quotes
Elves come in a wide variety of colors. A total of 8 different variations have been seen so far.

This is a list of all the different colors in order of appearance:

Trivia

 * Elves can only be unlocked on the Normal difficulty of songs.