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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 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
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 ...
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 Dügâh [1] Hicaz pentachord Hicaz tetrachord 1 S (5) Dügâh 2 A (12) Dik Kürdî 3 S (5) Nim Hicâz 4 T (9) (Only for pentachord) Neva - 5 - Hüseynî
Tetrachord Note order Step to next note (Number of steps) Note name starting from Dügâh [Note 1] Hüseynî pentachord: Uşşak tetrachord: 1 K (8) Dügâh 2 S (5) Segâh 3 T (9) Çârgâh 4 T (9) Neva - 5 - Hüseynî
Tetrachord Note order Step to next note (Number of steps) Note name starting from Rast [1] Nikriz pentachord - 1 T (9) Rast Hicaz tetrachord (starting from Dügâh) 2