The choir is still reeling from the loss of one of their members, but they're determined to practice as hard as they can for the upcoming competition. Unfortunately, their parents aren't happy about the choir's late hours and they complain to the school!
If a single one is missing, 
the whole ensemble falls apart.
إن نقصت واحدة، ستنهار المجموعة كاملة
Wenn auch nur eine fehlt,
ist das ganze Ensemble dahin!
Il suffit d’en perdre un
pour tout casser.
Se anche uno solo viene a mancare,
l'intero ensemble crolla.
Sem um, o conjunto todo se desfaz.
Если убрать хоть одну,
 то мелодия не сложится.