The "elite student in music room 2" turns out to be Haruki's delinquent classmate, Kazusa Touma.  With his characteristic pushiness, he tries to get her to join the light music club.  But his pushiness backfires, and only makes her more annoyed.  Setsuna gets irritated... no, involved, and approaches Kazusa secretly.
She's just going to sing at the school fair.
Sie will doch nur auf dem Schulfest singen.
Solo va a cantar en un festival escolar.
Solo va a cantar en un festival escolar.
elle va juste chanter 
au festival de l’école !
Ela só vai cantar no festival.