Aslide is a part of awind instrument consisting of two (or more) pieces of tubing fitted one closely inside the other, and used to vary the overall length of the tube, and therefore the pitch of the instrument. Often two sets of tubes are used, with a U bend attaching them; this arrangement is called asingle slide. Adouble slide, where two U-shaped slides are braced together and move on four inner tubes, is found on the B♭contrabass trombone.
Slides are used in three main ways:
In instruments such as thetrombone andslide whistle, moving the slide is the way to select the note while playing. Attempts to adapt other wind instruments to use slides instead oftone holes,keys orvalves have been tried; for example aslide saxophone was invented in the 1920s by Chicago instrument maker Reiffel & Husted.[1]
On most brass instruments, atuning slide is used to adjust the main pitch of the instrument before playing. A modern double or triplefrench horn has several tuning slides, which are sometimes moved during performance.
On instruments such as thetrumpet andtuba, smallvalve slides are moved manually or by means of atrigger while playing, to adjust the pitch of the note selected by the valves.
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