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!

Well, so much for your comeback.
حسناً، لا عودة مهنيّة لك
Dann ist dein Comeback vom Tisch.
Pues no habrá más oportunidades.
Pues no habrá más oportunidades.
Tant pis pour ton retour sur scène.
E allora, dubito fortemente
Então este será seu fim.
Тогда никакого дирижёрства вообще.