Keyboard instruments are a type of musical instrument that is played by pressing keys on a keyboard. Organs, pianos, glockenspiels, spinets, celestes, Moogs, and celestas are all examples of keyboard instruments. Organs are large instruments with many pipes and keyboards, while pianos are stringed instruments with a keyboard. Glockenspiels are percussion instruments made up of metal bars, and spinets are small harpsichords. Celestes are electric pianos, Moogs are synthesizers, and celestas are small glockenspiels.