sentences:  Similarly, in Cuban bufo theatre at the beginning of the 20th century, the guarachas that were sung at the end of the show were referred to as "rumba final" despite not sharing any musical similarities with actual rumba.Rumba instrumentation has varied historically depending on the style and the availability of the instruments.The core instruments of any rumba ensemble are the claves, two hard wooden sticks that are struck against each other, and the conga drums