It's time for the choir to start rehearsing in earnest, but the AC is broken and it's too hot to think. They move to somewhere cooler, and Rika gives them a song to hone their rhythm. Then, they're swept up in a series of inexplicable events!
What're you doing, Sensei? 
You sound like a skipping CD.
ما الذي تفعله يا سينسي؟ تبدو كقرص مدمج عالق
Hast du ’nen Schaden?
¿Qué haces?
Pareces un disco rayado.
¿Qué haces?
Pareces un disco rayado.
Il veut quoi, le prof ?
On dirait un CD rayé !
Ma che hai, professore?!
È da un po’ che sembri un disco rotto!
O que foi, professor?
Você está parecendo CD arranhado!
Вы что делаете? 
Как заевшая пластинка.