The cornet family begins with the Eb Soprano cornet, which covers the highest, most ornamental parts. Bb Cornets carry much of the melody. At the bottom end of the Cornet group is the Flugelhorn, which is often used as a solo instrument. The next voices of the Brass Band are the Baritones and Euphoniums. Baritones, which are only slightly larger than Tenor Horns, are often used for counter-melody.
Euphoniums usually supplement the melody line, and sometimes are used as solo voices.
The lone cylindrical renegade of the Brass Band is the trombone. The trombone is also one of the oldest instruments of the brass family. For obvious mechanical reasons, it would be very difficult to produce a conical-bore trombone. So, Brass Band composers and arrangers have found ways to incorporate this more focussed sound into their works. A Brass Band uses tenor trombones and a bass trombone.