The term harmony it has various meanings and uses according to the context in which it is used.
For instance, in general terms, with harmony one refers to the convenient proportion and correspondence of some things with others, generally connoting beauty. For example, when we dress, generally, all people try to find the best harmony between the colors we choose, that is, they are beautiful to look at.
On the other hand, for music, harmony is the discipline that deals with studying the best union and combination of sounds, whether simultaneous and different, but chords.
Harmony is in charge of doing two types of studies regarding its metier, the descriptive study on the one hand and the prescriptive study on the other. The first will focus exclusively on what is inherent to observation of musical practice and the second will do is to achieve, from that musical practice, a set of norms that will have universal validity.
Harmony as a discipline of study only has a reason to exist in Western music, since this is the only culture that boasts a polyphonic music, that is, a music in which different musical notes are executed simultaneously and in coordination. Basically, harmony will deal with the organization of chords, a chord is the combination of three or more different musical notes that are executed simultaneously.
So, to musicians or to all those people who feel a special fondness for music, even if they do not practice it, harmony will teach them to build chords and will suggest the best way to combine them according to the sensation that you want to produce. and transmit: relaxation and calm (consonant harmony) or a feeling of tension (dissonant harmony).
Secondly, In literature, the term harmony also has a special participation and significance since it is used to refer to the pleasant variety of sounds, pauses and measures, which are evidenced either in prose or in verse by the correct combination of syllables, voices and clauses.
