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!

Try not to forget the way 
you projected earlier!
!حاولوا عدم نسيان ما أظهرتموه قبلاً
Vergesst nicht
die Stimmtechnik von eben!
¡No se olviden
de lo que hicieron antes!
¡No os olvidéis
de lo que hicisteis antes!
N’oubliez pas l’harmonie
de tout à l’heure.
Vedete di non dimenticare la vocalizzazione di poco fa.
Lembrem de projetar a voz.
Не забудьте, как кричали в душе!