"Lost Rivers" Lost Rivers is also known as Lost River. The performer is Sainkho Namtchylak. Except for the two songs "Memory I" and "Memory II" which have obvious melodies and main lines, the rest of the songs in the entire album are all experimental works with vocals. The song "Lost Rivers" has neither melody nor lyrics, just a broken vocal wail from start to finish. The singer of this song, Sainkho Namtchylak, has excellent vocal conditions. After all, this is a 1991 studio work. The singer, Sainkho Namtchylak, is called a "vocal extremist" and has many listeners. A song that takes your breath away. In addition, she has an excellent vocal range spanning seven octaves.