Microtonic Alternative Info
The hegemony of 12-tone equal temperament (12-TET) has naturalized the concept of the tonic as a fixed, repeatable pitch class. This paper introduces the : a theoretical and practical framework wherein the tonal center is established not by a pitch from the standard chromatic scale, but by a microtonally inflected frequency (e.g., a quarter-tone, a seventh harmonic, or an irrational interval). Through analysis of repertoire by composers such as Ben Johnston, Easley Blackwood, and contemporary microtonal electronic producers, this paper argues that the microtonic functions as a destabilized yet perceptible anchor. We propose that this alternative challenges two pillars of Western tonality: the octave equivalence principle and the closure of the circle of fifths. Results from a pilot listening study suggest that listeners can habituate to a microtonic center within 60–90 seconds, indicating the viability of alternative pitch hierarchies.
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Blackwood’s Etude in 15-note equal temperament (80 cents per step) presents a tonic at 0 cents, but the scale lacks perfect fifths. The ear, trained to expect a 700-cent fifth, receives a 720-cent fifth instead. Blackwood demonstrates that a microtonic can be established purely by rhythmic and melodic repetition, even when harmonic support is “detuned.” The hegemony of 12-tone equal temperament (12-TET) has
