Yasouj - IRNA - On the slopes of Zagros, somewhere between the mountains of Dana, Khami, Nir and Siah, Kohgiluyeh and Boyer Ahmad, there was a time when a song flowed along with the sound of water, wind and herds. The sound that did not come from the radio or from the loudspeakers, but from the throats of men and women who planted rice, pounded oak, milked cows or took lambs to graze.