Biography SOSOSO (Tsukui Kazuhito) April 24, 1982 SOSOSO aka Tsukui Kazuhito is a Vocaloid track maker. SOSOSO got his start in 2004 as a song writer and arranger. He wants to blur the lines between pro, amateur and indies musicians. He is a veteran vocaloid track maker having made his first song, "Anata ga Iru Kara-Monitor of Love-" in November of 2007. He put that song up for consideration in a contest sponsored by DTM magazine and won a prize for it.