Percussion instruments are struck (hit), shaken, scraped or rubbed to produce sound.
They can be divided into two main groups: instruments that have an undefinable pitch and can only be perceived by the human ear as noise, like chocalho and the tamborim, and instruments that have a definable pitch and produce a specific musical note, like the timpani, the marimba and the xylophone.
The percussion family includes numerous instruments of various shapes and sizes, whose construction can be simple or complex.
The vibration of the instrument itself or of an extended membrane attached to it produces the tones or noises emitted when it is struck, shaken, scraped or rubbed.
Percussion instruments are the oldest musical instruments, going back to the beginnings of human civilization. Their usage is associated with parties and religious and secular festivities, funeral ceremonies, dances and many other events. They are found in all cultures and on all continents and to this day, they remain indispensable to practically all types and styles of music.