The most common clave pattern used in Cuban popular music is called the son clave, named after the Cuban musical genre of the same name. Clave is the basic period, composed of two rhythmically opposed cells, one antecedent and the other consequent. Clave was initially written in two measures of 2 4 in Cuban music.
Eon, a variation of aeon, is defined as a unit of geological time equal to a billion years, or a very long period of time. An example of an eon is the unit of measure used when talking about how long ago the solar system was created.
How long is an eon? Quick Answer. Although astronomers and geologists use the word eon to mean 1 billion years, it is more commonly used to refer to any long, indefinite period of time. Like the words age, epoch and era, it does not refer to a set number of years.