User blog comment:ThisIsXenon/GGaD fic -- Chapter 1/@comment-32460917-20180916195242/@comment-32460917-20180918052802

ok here i am a day later, giving links to the songs I mentioned



the first one is the original, with IA (the vocaloid used to sing) and a PV with ENG subs. It's the only one out of these three to have subtitles fyi

the next one is the Mekakucity M's cover of the song. I just like to call it "anime version" since the songs from that album were used in the anime adaptation

the final one is something called "nico nico chorus". "nico nico" being the very widespread Japanese video-sharing platform "Nico Nico Douga". We have Youtube, they have Nico Nico. A nico nico chorus is basically a compilation of several different covers. Hence the chorus part