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
Subcontrabass tuba probably during 1910 or 1911 and was destined for the World Exhibition in New York in 1913 (Green). This tuba is "playable," but two persons are needed: one to operate the valves and one to blow into the mouthpiece. Finally, Dr. Frederick Young plays a King BBb tuba that was converted into a double tuba (in BBb and EEE (natural)) by Dietrich Kleine-Horst (of the Herbert Gronitz Brass Instrument Company in Hamburg, Germany) in 1990. The BBb side is a contrabass tuba, and the EEE side is a subcontrabass tuba. Subcontrabass tuba The subcontrabass tuba is an extension of the