 It was flexible both in tone quality and intonation and could blend well with a variety of ensembles, gaining it immediate popularity with composers and conductors as the principal tenor-voices solo instrument in brass band settings, especially in Britain.It is no surprise, then, that when British composers – some of the same ones who were writing for brass bands – began to write serious, original music for the concert band in the early 20th century, they used the euphonium in a very similar role.When American composers also began writing for the concert band as its own artistic medium in the 1930s and 1940s, they continued the British brass and concert band tradition of using the euphonium as the principal tenor-voiced solo.