A glockenspiel is a musical instrument that is a type of percussion instrument. It consists of a series of metal bars or plates that are arranged in a similar fashion to a piano keyboard. The bars are struck with a pair of mallets or hammers to produce sound. Glockenspiels are typically tuned to a specific musical scale and can produce a bright and resonant tone. They are often used in orchestras, marching bands, and as a teaching instrument in music education.