Percussion pair is a term used to describe two instruments that are played together to create a rhythmic sound. The two instruments commonly used in this pairing are maracas and hi-hat. Maracas are percussion instruments consisting of a dried gourd or coconut shell filled with small pebbles or seeds, which are shaken to produce a rattling sound. Hi-hats are a type of cymbal consisting of two metal plates mounted on a stand, which are struck together to create a sharp, staccato sound.