Season 1
Spring in the first year of high school. Kumiko, a member of the brass band in junior high school, visits the high school brass band club with classmates Hazuki and Sapphire. There, she comes across Reina, her former classmate from junior high. Hazuki and Sapphire decide to join the club, but Kumiko can’t make up her mind. She recollects her experience with Reina at a competition in junior high school.
Episodes
1 Welcome to High School Apr 8, 2015 
2 Nice to Meet You, Euphonium Apr 15, 2015 
3 The First Ensemble Apr 22, 2015 
4 Singing Solfège Apr 29, 2015 
5 Festival Time May 6, 2015 
6 Twinkle, Twinkle, Little Tuba May 13, 2015 
7 Crybaby Saxophone May 20, 2015 
8 Festival Triangle May 27, 2015 
9 Please, Audition Jun 3, 2015 
10 Straight Trumpet Jun 10, 2015 
11 Welcome Back, Audition Jun 17, 2015 
12 My Euphonium Jun 24, 2015 
13 Goodbye Competition Jul 1, 2015