When was the euphonium invented?

The euphonium was invented in 1843 by Ferdinand Sommer, a German instrument maker. Sommer based his design on the tuba, which had been invented a few years earlier. The euphonium is a brass instrument that is played with a mouthpiece. It is a member of the brass family of instruments, which also includes the trumpet, trombone, and tuba. The euphonium is a versatile instrument that can be used in a variety of musical settings, from classical to jazz to marching bands.