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Atonality in its broadest sense is music that lacks a tonal center, or key. [1] Atonality, in this sense, usually describes compositions written from about the early 20th-century to the present day, where a hierarchy of harmonies focusing on a single, central triad is not used, and the notes of the chromatic scale function independently of one another. [2]
Tonality is the arrangement of pitches and / or chords of a musical work in a hierarchy of perceived relations, stabilities, attractions, and directionality. In this hierarchy, the single pitch or the root of a triad with the greatest stability in a melody or in its harmony is called the tonic. In this context "stability" approximately means ...
However, as with his earlier compositions, Liszt's later works continued to abound with forward-looking technical devices. Works such as Bagatelle sans tonalité ("Bagatelle without Tonality") foreshadow in intent, if not in exact manner, composers who would further explore the modern concept of atonality. [2]
Post-tonal music theory is the set of theories put forward to describe music written outside of, or 'after', the tonal system of the common practice period.It revolves around the idea of 'emancipating dissonance', that is, freeing the structure of music from the familiar harmonic patterns that are derived from natural overtones.
The ordered sequence C-C ♯-D would be notated 0,1,2 or (0,1,2). Although C is considered zero in this example, this is not always the case. For example, a piece (whether tonal or atonal) with a clear pitch center of F might be most usefully analyzed with F set to zero (in which case {0,1,2} would represent F, F ♯ and G.
In music, modulation is the change from one tonality (tonic, or tonal center) to another. This may or may not be accompanied by a change in key signature (a key change). Modulations articulate or create the structure or form of many pieces, as well as add interest.
Created Date: 8/30/2012 4:52:52 PM
As tonality began to expand during the last half of the nineteenth century, with new combinations of chords, keys and harmonies being tried, the chromatic scale and chromaticism became more widely used, especially in the works of Richard Wagner, such as the opera "Tristan und Isolde". Increased chromaticism is often cited as one of the main ...