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In music theory, a tetrachord (Greek: τετράχορδoν; Latin: tetrachordum) is a series of four notes separated by three intervals.In traditional music theory, a tetrachord always spanned the interval of a perfect fourth, a 4:3 frequency proportion (approx. 498 cents)—but in modern use it means any four-note segment of a scale or tone row, not necessarily related to a particular tuning ...
Tetrachord Note order Step to next note (Number of steps) Note name starting from Rast [1] Rast pentachord: Rast tetrachord: 1 T (9) Rast 2 K (8) Dügâh 3 S (5)
The notes of the central tetrachord of the system in ascending order are hypate, parhypate, lichanos (or hypermese), and mese. A second tetrachord is added above, after a disjunctive tone, and the corresponding names (together with the interval ratios of the standing tones) are: [6] mese (4:3) – nete (2:1) (standing) lichanos – paranete ...
Set 3-1 has three possible versions: [0 1 1 1 2 T], [0 1 1 T E 1], and [0 T T 1 E 1], where subscripts indicate adjacency intervals.The normal form is the smallest "slice of pie" (shaded) or most compact form; in this case, [0 1 1 1 2 T].
The Phrygian progression creates a descending tetrachord bassline: -♭-♭ - . Phrygian half cadence : i-v6-iv6-V in c minor (bassline: c -b ♭ -a ♭ -g) Play ⓘ . In music theory , the descending tetrachord is a series of four notes from a scale , or tetrachord , arranged in order from highest to lowest, or descending order.
Tetrachord Note order Step to next note (Number of steps) Note name starting from Çârgâh [Note 1] Çârgâh pentachord Çârgâh tetrachord (starting from Çârgâh) 1 T (9) Çârgâh 2 T (9) Neva 3 B (4) Hüseynî 4 T (9) Acem - 5 - Gerdaniye
Tetrachord Note order Step to next note (Number of steps) Note name starting from Buselik [1] Buselik pentachord Buselik tetrachord (starting from Buselik) 1 T (9) Buselik 2 B (4) Hicaz 3 T (9) Neva 4 T (9) Hüseynî - 5 - Mahur
Dominant seventh chord on C: C 7 Play ⓘ.. A tetrad is a set of four notes in music theory.When these four notes form a tertian chord they are more specifically called a seventh chord, after the diatonic interval from the root of the chord to its fourth note (in root position close voicing).