The Uyghur onniki muqam is a monumental musical repertory consisting of 12 suites (muqams) whose individual movements total some 360 distinct compositions. A marghul is the instrumental double of a vocal piece: it follows the same rhythm, but at a faster tempo and in a lighter spirit, with frequent modulations. This marghul is the first in a series of such pieces in muqam Chabbiyat (Chap Bayat). The performance reflects a new trend toward larger ensembles, with themes and motives dispersed among several instruments. (During, Levin 2001)