@HiCy2012: Although not “authentic” Tajik music (obviously, the composer is Han), the 7/8 rhythm and piano accompaniment lend interest and tension to the song. Also, I question your understanding of beautiful singing. Dilbèr executed this piece exquisitely, and her coloratura voice is better suited for the song than the other two ladies (at least the mezzo 殷秀梅) you mentioned.