Unlike anything you've heard. Avante-garde vocal solo, "Sequenza III", by Luciano Berio (composed 1966). In Sequenza III, Berio arranges aspects of the voice in everyday life (such as a laugh) and transforms them for coloratura. Berio also sought to surpass traditional instrumental limits, and even introduced a new notation to facilitate the reading and understanding of a work's basic concepts. One of my favorite 20th Century pieces: highly virtuosic, strange, and oddly hypnotic.