Ranchera is a genre of the traditional music of Mexico literally meaning "music of the ranches.” The word ranchera was derived from the word rancho because the songs originated on the ranches and in the countryside of rural Mexico. Rancheras that have been adapted by conjuntos, or norteño bands from northern Mexico and the southwestern US, are sometimes called norteños, from the Spanish word for northern. Although closely associated with the mariachi groups which evolved in Jalisco in the post-revolutionary period, Rancheras are also played today by Norteño (or Conjunto) or Banda (or Duranguense) groups. Drawing on rural traditional folklore, Ranchera was conceived as a symbol of a new national consciousness in reaction to the aristocratic tastes of that era. Traditional rancheras sing about love, patriotism or nature. Rhythms can be in 3/4, 2/4 or 4/4, reflecting the tempo of, respectively, the waltz, the polka, and the bolero. Songs are usually in a major key, and consist of an instrumental introduction, verse and refrain, instrumental section repeating the verse, and another verse and refrain, with a tag ending. Instrumentation may include guitars, strings, trumpets, and/or accordions, depending on the type of ensemble being utilized.