Drawn in 2014; TMLV is one of the Pixiv accounts attributed to LWA director Yoshinari Yoh
Tag: Official art
Sound! Euphonium (響け！ユーフォニアム)
Illustrations from the Hibike! Euphonium Creator’s Message Book (eBay) featuring Yuko Yoshikawa and Natsuki Nakagawa, by animation directors Miku Kadowaki (門脇未来) and Kohei Okamura (岡村公平).
Flip Flappers in Megami February 2017 issue
Hibike! Euphonium | 響け！ユーフォニアム
Kumiko, Reina, Sapphire, Hazuki, and Asuka
in the latest poster from the February issue of Animedia Magazine. Reina trying to feeding Kumiko with her homemade chocolate.
Official Art
Lovely Hibike! Euphonium 2 visual scan~
[Source]
The Yuri Side 