Haruki is entranced by Setsuna's singing on the rooftop, and plots to get her to join the Light Music Club no matter what.  But she hates standing out, so convincing her is incredibly difficult.  Meanwhile, the club has an even bigger problem.  The elite student from Music Room 2 he was trying to persuade to join his club as the keyboard player isn't a member of the Music Class, it's a mysterious person whose class and identity are a total unknown.
I'm never talking with anyone 
from the music curriculum again.
Ich werde nie wieder mit jemandem 
aus der Musikabteilung reden.
No volveré a hablar con nadie de 
la especialidad de música de nuevo.
Juró que jamás hablaré 
de nuevo con los de Música.
Je n’adresserai plus jamais la parole 
à un élève de la section musique.
Nunca mais falo com algum estudante de música.