I don't have it on me, but the preview poster the creators released showed Seth Bingo (the DJ) and Silent Girl (his obviously named, non-speaking accomplice), breaking the fourth wall and inviting the reader to the club night. He insists that the rules include 'girl bands only', and 'no magic'. This, plus his and the Silent Girl's star role in the fourth issue, suggest that they too are Phonomancers, or, like one of the other characters in the first series, at least aware of them.