5 months ago:
(reply to first comment)~ They are just computer singers. Someone just took the song, made a video, and put the song to the video. There is no "real" anime.
(reply to second comment)~ I'm just putting the title that the youtuber who uploaded the video put to the video. If you don't think the title of the video is "correct", then go tell Hotaru3241, the one who uploaded the video to youtube. That is his (or her) youtube username.