On Saturday, February 11 at 7:30 p.m. , San Francisco’s celebrated Kronos Quartet returns to Zankel Hall for a program of new works, six of which were commissioned as part of Carnegie Hall’s 125 Commissions Project, including the world premiere of Rhiannon Giddens’s At the Purchaser’s Option with Variations. Additional commissioned works include Garth Knox’s Satellites ; Kala Ramnath’s Amrit ; Nicole Lize’s Another Living Soul ; Tanya Tagaq’s Sivunittinni ; and Fod Lassana Diabat’s Sunjata’s Time on which Diabat will join the quartet on the balafon.