The purpose of this study is to identify some of the performance problems associated with contemporary piano music, using the Sonata No. 2 for Piano by Karel Husa (1921 - ) as the basis for the discussion. In so doing, this study identifies Karel Husa as an important contributor to twentieth century piano repertoire. Personal interviews and correspondence with the composer provided biographical, analytical, and stylistic insight for this study. Supplemental information on Karel Husa was obtained from journals, newspaper articles, and dissertations. The first chapter provides biographical information gleaned from the interview, with emphasis on Husa's keyboard compositions and early compositional influences. The second chapter offers a detailed formal analysis of the Sonata No. 2 from the perspective of motivlc development and cyclic unity. The final three chapters focus on twentieth century performance problems as exemplified in Karel Husa's Sonata No. 2 for Piano. In Chapter 3, the discussion of notation provides a general background on notational developments in pitch and rhythm in the twentieth century, with the Sonata illustrating these procedures. The fourth chapter concentrates specifically on Husa's individual rhythmic language. The final chapter is devoted to Husa's coloristic use of the piano, addressing his unique contributions to …