First-year high school students Kana, Reimi, and Hibiki are apprentices at the Karasuma Phoniatric Clinic, where the power of healing through song is combined with conventional medicine. One day when the girls' teacher is out, one of the clinic's patients takes a sudden turn for the worse. Is there nothing these apprentices can do to help?
The slightest vocal fluctuation can make a 
major difference in a healer's effectiveness.
يمكن أن يسبّب أقلّ تذبذب صوتيّ
فرقاً كبيراً في فعاليّة المُعالج
Hier trennt sich die Spreu
vom Weizen!
Toda fluctuación afectará
la efectividad de la sanación.
Toda fluctuación afectará
a la efectividad de la sanación.
La minima oscillazione nella voce
può cambiare di molto l'efficacia di un healer.
A menor flutuação vocal diminui
a eficácia de um curadeiro.
Малейшее колебание голоса
влияет на лечение.