Kumiko and Reina moments throughout the whole series (therefore potential spoilers).
I don't own anything, no copyright infringement intended.
0:00 Season 1 - Episode 4
0:12 Season 1 - Episode 4
0:47 Season 1 - Episode 5
1:28 Season 1 - Episode 6
1:54 Season 1 - Episode 8
2:13 Season 1 - Episode 8
2:29 Season 1 - Episode 8
2:46 Season 1 - Episode 8
3:14 Season 1 - Episode 8
4:45 Season 1 - Episode 8
5:00 Season 1 - Episode 9
5:22 Season 1 - Episode 10
5:57 Season 1 - Episode 10
6:29 Season 1 - Episode 11
8:16 Season 1 - Episode 12
8:47 Season 1 - Episode 13
8:58 Season 1 - Episode 13
9:15 Season 2 - Episode 1
9:25 Season 2 - Episode 1
9:43 Season 2 - Episode 1
9:56 Season 2 - Episode 1
10:20 Season 2 - Episode 1
10:36 Season 2 - Episode 1
11:42 Season 2 - Episode 2
12:11 Season 2 - Episode 2
12:25 Season 2 - Episode 2
12:47 Season 2 - Episode 3
13:04 Season 2 - Episode 4
13:32 Season 2 - Episode 5
14:00 Season 2 - Episode 6
14:13 Season 2 - Episode 9
14:38 Season 2 - Episode 11
14:58 Season 2 - Episode 11
15:19 Season 2 - Episode 12
15:39 Hibike! Euphonium: Chikai no Finale
15:49 Hibike! Euphonium: Chikai no Finale
16:04 Hibike! Euphonium: Chikai no Finale
16:19 Hibike! Euphonium: Chikai no Finale
16:48 Tokubetsu-hen Hibike! Euphonium: Ensemble Contest
17:14 Tokubetsu-hen Hibike! Euphonium: Ensemble Contest
17:38 Season 3 - Episode 1
18:00 Season 3 - Episode 1
18:28 Season 3 - Episode 1
18:46 Season 3 - Episode 2
19:12 Season 3 - Episode 3
19:31 Season 3 - Episode 4
19:43 Season 3 - Episode 5
20:04 Season 3 - Episode 5
20:49 Season 3 - Episode 8
21:07 Season 3 - Episode 11
22:04 Season 3 - Episode 11
22:57 Season 3 - Episode 12
23:36 Season 3 - Episode 12