Graduate student Suhail Yusuf Khan recently performed at two international music festivals with his group Yorkston / Thorne / Khan. The band comprises James Yorkston, a folk singer and guitarist; Jon Thorne, a jazz bassist; and eighth-generation musician Khan, a sarangi violinist and a vocalist of Indian classical music. The sarangi is a short-necked bowed string instrument from northern India, regarded as sounding similar to the human voice. On March 19, Yorkston / Thorne / Khan performed at the International Sacred Art Festival in Madrid, Spain. The festival included 39 concerts held over five weeks. And on March 23, Yorkston / Thorne / Khan dazzled…