Rumba Shakers or Maraca as they are called in South America specially Mexico.Maracas are musical instruments that sound like rattles. The maracas player shakes a maraca with each hand to mark the rhythm of the music. Maracas can be heard in many different forms of Latin American, pop, and classical music. Maracas are sometimes called rumba shakers. They are fun to play during a gathering or a big dinner.