Taki decides that the band will choose the euphonium soli player by voting on one final audition. Kumiko then decides that they should choose based on sound alone, and so the two of them audition anonymously.
Because I feel like you're the 
real you when you're performing.
‫لأني أشعر أنّك على طبيعتك الحقيقية عندما تعزفين.
Porque creo que eres
la verdadera tú cuando tocas.
Porque creo que eres
la verdadera tú cuando tocas.
Parce que j’ai l’impression
Perché, quando ti esibisci,
Porque sinto que você é você de
verdade quando está tocando...
Потому что за инструментом…