Sound! Euphonium

Taki decides to let the band executives choose their competition piece.

Members of the concert band are given a brief, three-day summer break that quickly fills with plans of all sorts; some of the third-years attend an event to gather information on different colleges and plan their futures.

The three-day summer camp has begun, and members of the concert band are faced with a rigorous training regimen; Mayu hesitates to audition yet again, afraid that she'll take the soli part from Kumiko; Motomu speaks to Midori in private.

Mayu taking the soli part has made the concert band uneasy; despite Kumiko's insistence that this is how it should be, several members take issue with Taki's decision.

The Kansai competition is right around the corner, and the band's dissent about Taki-sensei's decisions only continues to grow; Kumiko goes to speak with him, and she has to decide whether to speak her mind.

The concert band receives its Kansai competition results; Reina and Kumiko see Yoroizuka perform with some of their senpais; Kumiko and Reina's relationship becomes precarious as she continues to insist she won't go to music school.