Board Thread:Wiki Discussion/@comment-35301431-20130617151144/@comment-35301431-20131025183803

My attempt was
 * VOCALOID + UTAU - both synthesizers.
 * Human + Arrangement - by human.
 * Dances + Other - Human and any other synth or other creative media.
 * Fanmade PVs + Spinoffs - Anything that is an alternate take on the song or related content.

Perimeter is a shape.