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 tablature valve on a four-valved instrument. Brass tablature Brass Tablature is a rather rare form of music notation that applies to all brass instruments, but is most commonly found written for trumpet. It consists of lines with partials, and numbers representing valve or slide positions. The basic setup is shown here, with names of open notes for each partial on the left and rhythm or rhythmic notation above. The bottom line, indicating first-partial pedal tones, is not usually used by trumpet or horn. The seventh partial (B♭ on trumpet) is This method is impractical in the altissimo range, because of fingering