The choir heads into the mountains for a singing training camp, but when they arrive, they discover that the site they'd reserved is already being used by a rival school! Meanwhile, Haruo refuses to do anything but...look for kabocha squash?
You've worked very hard. Well then, 
let's try putting them together right away.
بذلتم جهداً كبيراً. حسناً، لنبدأ بتركيبها معاً
Das nenne ich Einsatz.
Trabajaron muy duro.
Vamos a unirlo todo.
Os habéis esforzado mucho.
Vamos a unirlo todo.
Vous êtes courageux.
Vi siete impegnati davvero tanto!
Vocês se esforçaram mesmo.
Вы больше молодцы. 
Теперь попробуем сложить всё это в песню.