Your life is all about the Euphonium. You have multiple Euphoniums / Baritones. You have multiple shirts that say Euphonium on them. You feel offended when the band director calls you a Baritone player and you won’t talk to your friends if they get it wrong. You will NEVER let anyone call you a tuba player. You can recite the difference between the Euphonium and the Baritone. If someone asks you what you play, you say “Euphonium!”. You will end up poor or in a Military Band.