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 Quartet No. 6 (Babbitt) one instrument at a time, are used to mark off composite pitch aggregates . The work is based on an all-partition array which is (with a few swapped partitions) the M5 transform of the one used in "The Joy of More Sextets" (1986), for violin and piano . String Quartet No. 6 (Babbitt) String Quartet No. 6 is the last of six chamber-music works in the string quartet medium by the American composer Milton Babbitt. Babbitt’s expansive and lyrical Sixth Quartet was written in 1993. It is in two sections, in each of which the work's underlying six-part all-partition array