User blog comment:Alb3rtusja/Can't use my Magica party - -/@comment-5957202-20161109062929/@comment-5957202-20161111013410

I tried using Sayaka/Kyouko outside the event but the song weren't One For All...is there any rules to use that song outside the event?? Or my party content should have 2/more characters with bgm song all for one??