Paul Hindemith ( POWL HIN-də-mit; German: [ˌpaʊ̯l ˈhɪndəmɪt] ; 16 November 1895 – 28 December 1963) was a German and American composer, music theorist, teacher, violist and conductor. He founded the Amar Quartet in 1921, touring extensively in Europe. As a composer, he became a major advocate of the Neue Sachlichkeit (New Objectivity) style of music in the 1920s, with compositions such as Kammermusik, including works with viola and viola d'amore as solo instruments in a neo-Bachian spirit.
https://en.wikipedia.org/wiki/Paul_Hindemith