Swanee whistle

A slide whistle (variously known as a swanee or swannee whistle, lotos flutepiston flute, or jazz flute) is a wind instrument consisting of a fipple like a recorder's and a tube with a piston in it. Thus it has an air reed like some woodwinds, but varies the pitch with a slide. The construction is rather like a bicycle pump. Because the air column is cylindrical and open at one end and closed at the other, it overblows the third harmonic.

Piston flutes, in folk versions usually made of cane or bamboo, existed in Africa, Asia, and the Pacific as well as Europe before the modern, manufactured version was invented, apparently in England in the nineteenth century. The latter, which may be more precisely referred to as the slide or Swanee whistle, is commonly made of plastic or metal.

The modern slide whistle is perhaps most familiar in its use as a sound effect (as in the sound tracks of animated cartoons, when a glissando can suggest something rapidly ascending or falling, or when a player hits a "Bankrupt" on Wheel of Fortune), but it is also possible to play melodies on the slide whistle.

The swanee whistle dates back at least to the 1840s, when it was manufactured by the Distin family and featured in their concerts in England. Early slide whistles were also made by the English J Stevens & Son and H A Ward. By the 1920s the slide whistle was common in the USA, and was occasionally used in popular music and jazz as a special effect. For example, it was used on Paul Whiteman's early hit recording of Whispering (1920). Even Louis Armstrong switched over from his more usual cornet to the slide whistle for a chorus on a couple of recordings with King Oliver's Creole Jazz Band. At that time, slide saxophones, with reeds rather than a fipple, were also built. The whistle was also widely used in Jug band music of the 1920s such as Whistler's Jug Band.

...
Wikipedia