Oud later), tuned in successive fourths. Curt Sachs said they were called (from lowest to highest pitch) "bamm", "maṭlaṭ", "maṭnā" and "zīr". "As early as the ninth century" a fifth string "ḥād" ("sharp") was sometimes added "to make the range of two octaves complete". It was highest in pitch, placed lowest in its positioning in relation to other strings. Modern tuning preserves the ancient succession of fourths, with adjunctions (lowest or highest courses) which may be tuned differently following regional or personal preferences. Sachs gives one tuning for this arrangement of five pairs of strings, d, e, a, d', g'. Historical
String Quartets (Ligeti) work, like the first string quartet, but was also considered to be in six or three movements, with the three lasting about 12' + 3' + 6' minutes in total. The piece would be dedicated to the Arditti Quartet, entirely microtonal, inspired by the hyperchromaticism of Gesualdo, and inspired by melodic ideas from Burma, Uganda, Zimbabwe, Java, Bali, and Cameroon. It's also suggested that the entire quartet would be tuned in scordaturas based on harmonic partials, akin to the violin and viola in Ligeti's Violin Concerto. The fourth quartet would be dedicated to the Kronos Quartet, and be inspired by