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
Jazz band earlier periods of jazz, a bass saxophone was used as a bass line instrument, though this is far less common today. The trombone section consists of three tenor trombones and one bass trombone. The trumpet section consists of four trumpets, though some compositions and arrangements call for five trumpets. A trumpet player may sometimes double on a flugelhorn. The tuba is the largest and lowest-pitched brass instrument. This instrument made its first appearance in the 19th century, being played at orchestras. When involved with jazz, most tubas are played outdoors. Tuba players are generally called "Jazz tubists." Jazz violin is