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
Tenor cornett The tessitura of the tenor cornett is c to around e". However, an experienced player with a powerful embouchure and a small bore instrument may reach g" or higher. The timbre or sound quality of the tenor cornett is somewhat horn-like with an agreeable woodwind character. In the hands of an experienced player, the tenor cornett has a smooth sound, which is an ideal link between the sound of the higher cornetti and the lower trombones. The sound has been described as "foggy". The instrument blends extremely well with male voices, particularly those of countertenors. Michael Praetorius was not enthusiastic