Tenshi, Ei-chan, and Shiratori all attend Kawagoe Academy. One day, they get pulled into the orbit of former conductor Haruo. He drags them into his newly founded boys choir where they suddenly find themselves performing a song in front of an audience!

Okay, we're taking it again from the top!
!حسناً، سنعود للبداية من جديد
Also! Noch mal auf Anfang!
Bueno, desde el principio otra vez.
Bueno, desde el principio otra vez.
On reprend, d’accord ?
Allora, ancora una volta dall'inizio!
Vamos mais uma vez do começo!
Так, давайте по новой, с самого начала.