“Guajira” is a flamenco style which comes from a Latin American genre. It has a melodic, harmonic and rhythmic structure related to the peasant genre. Cuban “tonadas” resulted in the late 19th century. that’s how this style turned into flamenco.
The singer Pepe Marchena, evolved his “guajiras” in the thirties until reaching a melismatic and danceable style. His tunes, led to prolific derivations that are still preserved.
“El Piyayo” de Malaga got his “aguajirados” tangos following a “guajira”, which were called “tangos de Piyayo”. These ones were related to the genre of “guajira-son”. Chano Lobato, interpreted his “guajiras inspired in bulerías”.