Diatonic, Chromatic, Enharmonic; Consonance, Dissonance Historical and Cultural Space Meanings

In music there are several terms permanently used, whose meaning changed in time, depending on the historical moment or cultural space; among them, consonance and dissonance, diatonic, chromatic, and enharmonic. Tonality appeared during baroque era and was finalized by J.S. Bach. After that, it grew up in the music of Haydn, Mozart, Beethoven, Chopin, Liszt – for about 150 years. At the end of 19 th century, Wagner created the expanded tonality – the last step of the tonal system evolution. This tonal type represents an original, ingenious synthesis between all historical phases of the system evolution; meantime it contains the germ of polytonality and atonality. In other words, Bach and Wagner marked the beginning and end of the tonality. Key-Words: consonance, dissonance, diatonic, chromatic, enharmonic, tonality, expanded tonality, tonic.