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.
Basses are also conical bore instruments.
The percussion section of a Brass Band is very similar to percussion sections of orchestras or bands, consisting of snare and bass drums, cymbals, timpani and mallet instruments.