Such is the level of their success, Fukase’s voice has been captured as a synthetic Vocaloid, meaning songwriters can have him sing – virtually – anything they wish. The process requires hours in a studio meticulously recording every possible sound; Fukase says he’s “erased it from [his] memory”. Pianist Saori isn’t so lucky: “It was a nightmare! I don’t know why but he wanted to have me there when he recorded the Vocaloid samples. Every sound, 100 times. Two weeks and I was just sitting there, it was actually a nightmare!”