Brass instrument can be very useful for a 1st or 3rd horn player, who uses the F side less. Another approach was the addition of two sets of slides for different parts of the range. Some euphoniums and tubas were built like this, but today, this approach has become highly exotic for all instruments except horns, where it is the norm, usually in a double, sometimes even triple configuration. Some valved brass instruments provide triggers or throws that manually lengthen (or, less commonly, shorten) the main tuning slide, a valve slide, or the main tubing. These mechanisms alter the pitch of notes
Brass band are conical-bore instruments, which gives the British-style brass band its distinctive bright, mellow sound (as opposed to a dark symphonic sound). All parts apart from the Bass Trombone and percussion are now written in Treble Clef. Note that despite its musical range, the alto horn in E is traditionally called the tenor horn in British bands. Brass bands have a long tradition of competition between bands, often based around local industry and communities. In the 1930s brass bands thrived most with around 20,000 brass bands in the U.K. British-style brass bands are widespread throughout Great Britain and Northern Ireland, Australia,