Concert Etüde op.49 ( This versatile solo works great as a showpiece for either euphonium or trombone with a variety of accompaniments. The accompanying ensemble can be trombone quintet, tube/euphonium ensemble, or simply a mix of low brass instruments. This accompaniment will also work with the original trumpet solo edition. solo parts included: solo BC/TC, euphonium/trombone BC/TC 1, 2, 3, 4, tuba 1, 2, 3)