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!
You all get a little loose 
with the rhythm sometimes.
ترتخون جميعاً مع الإيقاع أحياناً
Ihr geratet manchmal aus dem Takt.
A veces se salen del ritmo.
A veces os salís del ritmo.
Parfois, vous avez du mal
à garder le rythme.
Ogni tanto tendete ad andare fuori tempo!
O ritmo de todos dá
uma afrouxada às vezes.
Вы все иногда выпадаете из ритма.