Kamancheh virtuoso Kayhan Kalhor (L) performs a concert with santur players Ali Bahramifard (C), tar virtuoso Hadi Azarpira and tombak player Navid Afqah (not seen in the photo) from the Rahe Ruh band at Pardis Hall in the central Iranian city of Yazd on May 13, 2016. (ISNA/Amir Hassanzadeh)