Initially, even when written by the creole population of Cuba, who opposed the ruling hierarchy, the music retained its European style of "intricate melodies, and dark, enigmatic and elaborate lyrics".
Later, in the latter part of the nineteenth century, the canción came under the influence of the trovador movement.
This resulted in the lyrical expression of the feelings and aspirations of the population.
The accompaniment of the guitar followed naturally, and the canción gradually fused with other forms of Cuban (and therefore Latin American) music such as the bolero.
As a distinguishing mark, though, the canción never has the full-blooded Afro-Cuban percussion which marks so much Cuban popular music.
Canción was the least specific term to cover all the popular, secular styles of vocal music of Spain at the time.
In Spanish-language concerts and recordings, when the title of a particular song does not belong to a danceable genre (such as son in Cuba, or chacarera in Argentina, its genre is mentioned as "canción".
Credits to the contents of this page go to the authors of the corresponding Wikipedia page: en.wikipedia.org/wiki/Canción.