euphonium-1.0.3+1.21.jar is a release file of the Minecraft mod Euphonium for Fabric, NeoForge, Quilt, made for Minecraft 1.21, 1.21.1. It was published on December 12, 2025 and is 42.3 MB in size. For the full description, screenshots and every other version, visit the Euphonium mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.
