Low whistle grip" may be required due to the distance between the holes. They belong to the same woodwind instrument family of end-blown fipple flutes. Though the tone of this instrument varies subtly among makers, low whistles are generally characterised by a more breathy, flute-like sound than traditional tin whistles. While the precise history of the low whistle is often debated, it is known that various kinds of vertical fipple flutes have existed in antiquity. The fipple flutes developed during the 16th century were the ancestors of today's low whistle, carrying through from early transverse flutes the six-holed design tradition and conical
Slide whistle in an imitation of a police siren. Dylan then incorporated the instrument into the song, which is credited as "police car." Roger Waters played two notes on the slide whistle in the song "Flaming", from Pink Floyd's debut album "The Piper at the Gates of Dawn". A more recent appearance of the slide whistle can be heard in the 1979 song "Get Up" by Vernon Burch. The slide whistle segment of this song was later sampled by Deee-Lite in their 1990 hit "Groove Is in the Heart". The Las Vegas-based band Holes and Hearts also used the slide whistle on