Analysis of information sources in references of the Wikipedia article "Pamiri rubab" in English language version.
Another common instrument in Badakhshan is the fretless Pamiri rubab, whose gut strings produce a less strident sound than other kinds of rubab strung with metal strings... The maddoh begins with an unattributed ghazal (poem composed according to a metrical scheme of long and short syllables whose form consists of rhymed couplets that share a refrain) sung softly in free rhythm to the spare accompaniment of a Pamiri rubab.
