@futaedits0: Tetoooo🎶 | song - AcTuGmAtU3M.. #creatorsearchinsights #vocaloid #hatsunemiku #kasaneteto #capcut 7 Kasane Teto (重音テト) is a popular Japanese vocal synthesizer character initially created as an April Fools' Day prank in 2008 by users on the 2channel bulletin board. Designed to look like a fake Vocaloid, she quickly evolved into a fully functional vocal persona for the free singing software UTAU.