Nevertheless, many other considerations of pitch are relevant to music, its theory and structure, such as the complex system of Rāgas, which combines reflections and codifications that are both melodic and modal.  The pursuit of stacking thirds on a seventh chord creates extensions and brings the “expanded tensions” or “higher voltages” (which more than an octave above the root when stacked in Teren), the ninth, elves and thirteenths. This creates the agreements that bear their name. (Note that the types of tertian chords, with the exception of dyads and triads, are named after the interval of the largest size and size used in the stack, not according to the number of chord members: thus, a ninth chord has five members [tonic, 3rd, 5th, 7, 9.], not nine.) Extensions through the thirteenth reproduce the existing members of the agreement and are (normally) removed from the nomenclature. Complex harmonies, based on expanded chords, are found in abundance in jazz, late romantic music, modern orchestral works, film music, etc. It was not until the publication of Rameaus Traité de l`harmonie (Traité sur l`harmonie) in 1722 that the term was used in the title, although this work is not the first record of the theoretical discussion of the subject. The basic principle behind these texts is that harmony (please) sanctions harmony by sticking to certain prefabricated principles of composition.  A number of characteristics contribute to the perception of the harmony of a chord. Current dictionary definitions, while trying to give concise descriptions, often emphasize the ambiguity of the term in modern usage. Ambiguities result either from aesthetic considerations (e.g.B.
believes that only pleasant concordances can be harmonious) or from the point of view of musical texture (distinction between harmonics (simultaneous sound pitches) and “counterpoints” (progressive sounds).[ 10] In the words of Arnold Whittall: Carl Dahlhaus (1990) distinguishes between coordinate harmony and lower harmony. Subordinate harmony is the hierarchical tone known today or tonal harmony. Coordinate harmony is the ancient medieval and renaissance tone: “The term means that the sound colors are related to one another without giving the impression of a targeted development. A first agreement forms a “progression” with a second agreement and a second with a third. But the old chord sequence is independent of the sequence and vice versa. The harmony of coordinates follows direct (neighboring) relations and not indirectly as in subordinate. .