Music As MedicineAmazon. com Like a master calligrapher, Tibetan flutist Nawang Khechog deploys his flute with an economy of line and texture. Music as Medicine is the latest offering from Khechog, who has recorded with synthesist Kitaro and Native American flutist R. Carlos Nakai and last year cocomposed the score to the acclaimed documentary Tibet: Cry of the Snow Lion. On this album, he sets his flute up in gentle duets with Nakai and violinist Sandra Wong. Nawang