How do you get to be part of the concert?

[Knight of the Redlotus]

Like in this video: https://www.youtube.com/watch?v=ZZiMd9I2rkY

[Kossy]

Press E during concert when by the stage. There's a limited amount of spots so if the lobby is packed with people, you may not make it in.

[Knight of the Redlotus]

Ok thanks, but you where wrong :( its not by the stage :( its in the center of the plaza (Shopping district). There some kind of teleporter and i activated it to find myself on one of the platform dancing XD.

I really liked the minigame where you gotta press the mouse/controller button in rythme at the right time.

[Kossy]

Guess I should've been more specific and said by the concert's stage. During different concerts you'll press E to interact either at the stage part of the shop area (Persona, Vocaloid, pre-Ep4 Quna, Sachiko) or at the "fountain" (Rare Drop, post-Ep4 Quna). That interaction is also either on or by where that concert's stage will appear, so I didn't actually think to separate that from the stage at the back of the shop when responding.

[Knight of the Redlotus]

Fair enough :) there so many different event that mistakes are bound to happen.