"When Yo Hitoto's songs are slowed down to 80% of their original speed (or as long as the song's pitch is lowered to 80% of the original), her voice sounds uncannily like that of Hirai's. Hirai's sounds also sound like that of Hitoto when replayed in 125% of their original pitch."

THANK YOU WIKIPEDIA

I subtitled this a while ago, for those interested:

http://www.overstream.net/view.php?oid=lgi8sun9a0au

I'm pretty sure that's actually a mole.