Yujin finds himself assigned to a new teacher, who forces him into performing a duet with Naeil.

Through their Mozart duet, Naeil falls for Yujin, which messes her up for Ilrak's performance.

Stresemann gives Yujin the chance to conduct; elsewhere, Naeil finds herself being maliciously pranked.

It is officially announced that Orchestra A and Orchestra S will compete.

The fall concert arrives, but instead of casting his vote, Stresemann continues to shake things up.

All but Yujin finds the unyielding strictness of the Yoon Yi-song Music Festival intimidating.