 The "euphonium repertoire" consists of solo literature and orchestral, or, more commonly, concert band parts written for the euphonium.Since its invention in 1843, the euphonium has always had an important role in ensembles, but solo literature was slow to appear, consisting of only a handful of lighter solos until the 1960s.Since then, however, the breadth and depth of the solo euphonium repertoire has increased dramatically.