Sonatas for Solo Violin (complete) is the complete set of six solo violin sonatas, Op. 27, by Belgian violinist-composer Eugène Ysaÿe, composed in 1923. The works combine late-Romantic virtuosity with early 20th-century chromaticism and contrapuntal writing, presenting concentrated technical demands and expressive diversity, and they mark a shift in Ysaÿe's output toward substantial original compositions for solo violin that influenced the development of 20th-century solo violin repertoire.