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→Micro-Tonality
'''Microtonal''' music refers to music that uses intervals outside of the 12-tone chromatic scale, such as by subdividing semitones/half-steps. This can be from using notes in an equal temperament with a number of notes greater than 12 that do not align with the 12 intervals associated with Western music. For example, in 31-TET above, 150.43 HZ would be a note between D and D{{s}} - a ''micro-tonal'' note. Also, some forms of music developed outside of Western influence use such intervals and can be considered micro-tonal (even if their scales consist of 12 or less notes). Additionally, the blue notes in ''Blues'' can be considered micro-tonal, often expressed on guitar using quarter bends, with no strict definition on the exact interval relationships of the blue notes to the tonic. ''Jazz'' also typically employs micro-tonal techniques, including blue notes.
Microtonal music can be played on guitar by using alternate tunings, [[#Just-Intonated and Special Instruments|specialized guitars]], [[Bending|bends]], and [[SlideGuitar|slide guitar]].
== Alternate Tuning Systems for Guitar ==