Sequenza V is a composition for solo trombone by Luciano Berio, part of his series of pieces with this title. Written in 1966 for Stuart Dempster, it has since been performed and recorded by Vinko Globokar, , Christian Lindberg, and others. The piece calls for many extended techniques including multiphonics (singing and playing at the same time), rattling a plunger mute against the bell of the instrument, glissandi, and producing sounds while inhaling. In addition, the trombonist mimes and must at one point turn to the audience and ask, "Why?"