Currently on the front page of Know Your Meme, a very popular site that researches the history of and tracks the development of Internet pop culture phenomena:
http://knowyourmeme.com/videos/17199...sthesia-videos
Not the most musically flattering presentation of the euphonium, but it's a funny way to spread awareness of the existence of the euphonium to the public that doesn't confuse it with the baritone or tuba.