Mushtaq Saznawaz is the son of great Sufiyana music maestro of Kashmir ustad GM Saznawaz.
Ghulam Mohammad Saznawaz (died 13 February 2014) was the last known master of Kashmiri Sufiyana Music in the world. He was awarded the Padma Shri in 2013. He died in 2014 in Srinagar at the age of 74. Source (wikipedia)
You can find him on Facebook here https://www.facebook.com/mushtaq.saznawaz
Download this track from here http://dualismrecords.bandcamp.com/album/subterra