Shades Iv , By Naresh Sohal , Makes Use Of Harmonies Generated By The Open Strings Of The Viola, Which Are Heard Pizzicato At The Opening Of The Work Accompanying A Bowed Melodic Line. This Passage Recurs Later, After A Climax Which Sends The Player To The Highest Reaches Of The Instrument, And The Work Ends With All Four Open Strings Plucked Simultaneously.