Sonate für Bratsche allein = for solo viola : opus 31/4 - Hindemith, Paul 1895-1963 (Schott Music GmbH & Co. KG, Mainz, 1992)
Title from resource description page (viewed October 14, 2016). - Includes preface in German and English. - Includes facsimile of a manuscript copy of the work with annotations by the composer. - Written in 1923