The Klenke Quartet from Germany gives a performance during the 33rd Fajr Music Festival at Tehran’s Niavaran Cultural center on January 14, 2018. The quartet that made its debut in 1994 features Annegret Klenke and Beate Hartmann on violin, Yvonne Uhlemann on viola and Ruth Kaltenhäuser on violoncello. The four musicians are all graduates of the Franz Liszt College of Music in Weimar. Tehran Times/ Behnam Tofighi