abstract: Hans Gál is arguably one of the most underrated, underperformed and forgotten composers of the twentieth century. Once a prolific composer in the 1920s and 1930s, Gál’s career was cut short by the Nazi regime in 1933 when he was fired, and his works banned due to his Jewish heritage. Following the Second World War, his music was relegated as obsolete, belonging to a bygone era. Hans Gál is a perfect example of the intransigence, superficiality, and discrimination of the evolving musical fashion, and his life-story speaks to the misfortunes and persecution of the Jewish people in the mid-twentieth century. Consequently, Hans Gál is known today mainly as an educator, scholar, and editor of Brahms’s works, rather than as a composer, despite an impressive compositional output spanning over 70 years covering every major musical genre. Within his impressive oeuvre are several little-known gems of the violin repertoire, including the Sonata in D for Violin and Piano and Violin Concerto op. 39 among others. Scholarly writings on Gál and his music are unfortunately scarce, particularly such works exploring his violin music. However, recent years have seen an increased interest in resurrecting the music of Gál. Recordings of his major works as well as research of his music have furthered the awareness and understating of this forgotten composer’s music. In my document, I will continue the path of recent rediscovery and celebration of this unsung hero of twentieth-century post-Romanticism with an in-depth look at his Sonata in D for Violin and Piano (1933). A light-hearted, accessible and unpretentious work, the Sonata in D distinguishes itself in the violin-piano sonata repertoire of the interwar period by its witty, clear use of form and motivic/thematic unity in the vein of the great Viennese masters. Gál’s take on traditional idioms such as tonality, coupled with masterful use of the implication/realization process, create a highly original and noteworthy style, that renders the Sonata in D an immediately appealing work for performers and listeners alike. / Dissertation/Thesis / Doctoral Dissertation Music 2019