(This article is not meant to discuss the use of euphonium in jazz, but that may be a topic for a future post.) One has to look hard to find them, but there actually are examples of a euphonium being heard or mentioned in popular music. I began to notice when I was in high school. First, I knew some of the songs from the musical "The Music Man," including the song "76 Trombones," which mentions euphoniums. And then there was a pop song called "What the World Needs Now (Is Love), ...