I do not own any rights to the music and will remove immediately upon request.
Part of KQ their album Floodplain on which they play arrangements of folk songs from cultures across the world that are 'surrounded by water and prone to catastrophic flooding.' This track in particular is from Azerbaijan, written originally by Rahman Asadollah. The album features a variety of interesting songs, one of which has Terry Riley playing the tanpura.
Artist: Kronos Quartet
Title: Mugam Beyati Shiraz
Violin, production: David Harrington
Violin: John Sherba
Viola: Hank Dutt
Cello: Jeffrey Zeigler