Whistle Pops (called Melody Pops in some countries) are a lollipop brand formerly produced by Spangler Candy Company, now produced by Chupa Chups, starting in the 1970s that are designed to make a whistling sound. They are produced with a hole in them, and when blown into, a whistling sound emanates from the confectionery.
Reintroduction
After their being discontinued for a few years, candy company Chupa Chups reintroduced Whistle Pops, renaming them Melody Pops, and began marketing them in the United States. Melody Pops are marketed with a tagline stating "play real music". The Melody Pop's handle contains a slide whistle-like plunger. Each lollipop's inner wrapper has sheet music printed on it. Each note is numbered, so the whistler can change the notes they play by sliding the plunger up and down to the different numbers engraved on the plunger.
In the United Kingdom
In the United Kingdom (UK) some pharmacies stock Whistle Pops.