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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)
In Turkish classical music, the Uşşak pitch class set is a set of scales that are named after the Uşşak or Hüseynî makams.For Uşşak, there is the Uşşak tetrachord and the Hüseynî pentachord.
Kürdî tetrachord: Buselik pentachord: Kürdî tetrachord: This is the makam that the pitch class set is named after. Buselik: Buselik pentachord: Kürdî tetrachord: This scale exists within Kürdî if the Higher Çeşni and Higher Extension are put on top of each other.
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)
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
For instance, the tetrachord IPF 242 clearly relates to the eighth hour, IPF 2-4 (set-class 3-8 in pc-set theory). It can therefore be labelled as VIII 4 — the 4 relating to its cardinality, a tetrachord. Note that some IPFs cannot be labelled as hour-groups if the distribution of intervals is ambiguous: e.g. for IPF 2232, it is unclear as to ...
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 ...