This dance is called Samaa, which is a kind of Sufi Persian dance.
The song is by Alireza Eftekari and the setar is played by master Hosein Alizadeh.
The name of the song is : "Seyd dar peye sayyad" which means : "a prey looking for the hunter"
God bless the great country of Iran ( Persia ) as well as all other great nations.