Love the vocal contrast: KAITO sounds soft, gentle, calm and as if it mostly contains higher frequencies while Hirasawa has this blow-you-away, soaring, powerful, diverse and passionate voice which completely overpowers KAITO at lower frequencies. So nice. Because the original song feels just as triumphant as music can possibly get, it cannot get more powerful, though. Too bad there'll be no Vocaloid with Hirasawa's voice. It's way too beautiful.
I love how KAITO and Susumu Hirasawa's voice harmonize and match each other. It's like they're made for each other!! It's even nicer knowing that Susumu Hirasawa was such a huge inspiration for so many incredible vocaloid artists, especially Hachi/Kenshi Yonezu ^_^ This is my way of celebrating as a vocaloid fan lol. Thank you~~