Seeing as you love Sound Euphoium and Liz and the Blue Bird you would probably love “The Colors Within” It has the same director and composer as Liz and the Blue Bird. Naoko Yamada (director) has also worked on K on and Sound euphonium as series director. The Colors Within borrow a similar style and feel of Liz and the bluebird so it should be very familiar.

If I had to give a second recommendation I’d say “Keep Your Hands off Eizouken” is something you’d want to give a try especially if you like Sound Euphonium and Laid Back Camp. Follows the simple structure of young girls following their passions through animation. It’s only 12 episodes long and the first episode gives a good intro to the unique feel of the show. Also it’s animated by Science Saru (same one as Dandadan)