A "Circle" or a music group, is a group of different producers and illustrators collaborating on producing Vocaloid songs. Some may be in charge of illustrations, some for arrangement, lyricist, etc.

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.