From the Music Battler Type A bonus DVD.

I do not own any of this stuff, so go and buy some GS stuff over at Victor's shop (http://victorentertainmentshop.com/se..., on Spotify (https://open.spotify.com/artist/6CnfL..., through CDJapan (http://www.cdjapan.co.jp/person/70008...) or whatever.

Also, go read the girl's blog over (https://lineblog.me/gacharicspin/), or, if you can't read Japanese, go read @gachaesthetic's translation of it (  / gacharanger  ) and thank them for their hard work.