Talk:Kagamine Rin \ Len/@comment-84.174.155.23-20140414064055/@comment-53539-20140415222825

"Mirror sound" refers to the act of 'echoing', where sound bounces/mirrors off of object. Basically, its saying the sound of one vocal is a reflection/mirror of the other.

Miku name of "first sound" is a reference to when the voice began to travel when first spoken, and Luka refers to sound after its traveled a while.

In other words; begining, middle, end; CV01, CV02, CV03.

Their is not a reference to the vocaloids. Remember; the concept came before recording, before design of avatar.