This riddle asks: What has a whistle but never sings?
A common answer is: a kettle.
A traditional stovetop kettle can whistle loudly when the water inside reaches a boil. But even though it makes a musical-sounding noise, it does not actually sing.
The riddle plays on the difference between making a whistle sound and singing a song. The clue points toward an everyday object known for making that specific noise.
Once you think about things in the kitchen that whistle, a kettle is a natural answer.
