I recognized every song from audio alone and the nostalgia is making me cream. Screw the anime, I'll just jam out and keep remembering what Kagerou was really all about.
EDIT: I like how he just took out a plushie for Gunjou Rain. So appropriate. Also no Daze/Days?!
I could only recognise a few of the songs since I haven't listen to all the songs from Kagerou Project. Well this is a Vocaloid medley, though it would be interesting to see his cover of Daze/Days if he plans on making one.