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A drum is a musical instrument that is played with the hands using a drum stick (a stick for hitting a drum). A collection of drums and cymbals is called a drum kit, or drum set.
Drums are used to keep a steady beat in a song. They give music of many kinds a sense of feeling. For example, to make a song to be slow or fast, the drums play slower or faster.
A drum is a percussion instrument, which means it makes a noise by being hit. There are many types such as cymbals and bells; even a simple piece of wood can be used as a percussion instrument.
The drum kit is a group of drums & cymbals to make beats for music. Drum kits are used in most types of popular music, including rock, jazz, country, blues, and many others.