Soleares is one of the most basic forms or palos of Flamenco music, probably originating among the Calé Romani people of Cádiz or Seville in Andalusia, the most southern region of Spain. It is usually accompanied by one guitar only, in phrygian mode "por arriba" ; "Bulerías por soleá" is usually played "por medio". Soleares is sometimes called "mother of palos" although it is not the oldest one and not even related to every other palo
Soleá at concert.
A palo or cante is the name given in flamenco for the different traditional musical forms.
The Palos of Flamenco