The Ivalas Quartet is scheduled to perform on November 6 & 7 with classical music by Alberga, Golijov and Beethoven at the Grusin Music Hall on CU Boulder Campus. Composed of violinists Reuben Kebede and Tiani Butts, violist Aimée McAnulty and cellist Pedro Sánchez, the Ivalas Quartet has been changing the face of classical music …