Used

<<Criticism, consideration and explanation system>> Arcade Sound, Game One, Cleme, No Accidents Guide / Piezo element is my friend.

Used

<<Original>> A book to understand the maintenance of the sound game a little bit. / KEYCRASH / Piezo element is my friend.

Used

<<BanG Dream!>> Star Casmie Super Deluxe / KEYCRASH / Piezo element is my friend.

Used

<<Criticism, consideration and explanation system>> Drum Mania / KEYCRASH / Piezo element is my friend.

Used

<<Original>> Otogei to Shitte Mainte / KEYCRASH / Piezo element is my friend.

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<<Criticism, consideration and explanation system>> SOUNDS WITH HISTORY! IT'S TOO DIFFICULT! / Piezo element is my friend.

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<<Other games>> That option, also in Gitadora (probably) / KEYCRASH / Piezo element is my friend.

Used

<<Original>> Talk about Parsley Reader and transportation e-money / KEYCRASH / Piezo element is my friend.