All of these are 40mP songs, as you might guess from the birthday wishes on the picture. Some of them aren't as clearly identifiable as others (I'm not exactly sure where the STEP TO YOU pink Miku came from?) but it's going in chronological order through his releases so I labelled/tagged all of them.
Who is that brunette in the kimono between Torinoko City and Time Machine, though?
Time MachineKimi no te, boku no teFutariboshiTorinoko CityClosed BlueMikadzuki RiderSing my LoveMousou SketchMelody in the skyLife sizeSpringWatashi ga Kami wo Kitta RiyuuSTEP TO YOUAozora LineJengaNakenashi no ChikaraRyuusei HunterKimiboshiKyodai ShoujoScrap&BuildKuuchuu AquariumWagamamaNatsukoi Hanabi