The African-Ecuadorian sanjuán, “Me gusta la leche,” is
actually an example of a hybrid music because it has 8-beat phrase
and double couplet structure, syncopation.
In music, syncopation is a stress on a normally unstressed
beat, or a missing beat where a stressed one would normally be
expected. Syncopation is used in many musical styles, including
classical music, but it is fundamental in such styles as reggae,
ragtime, rap, jump blues, jazz and often in dubstep