Debussy had intended to write a cycle comprising six sonatas. However, as he was seriously ill, he was forced to conclude it with the third one. Whereas the Sonata for Cello and Piano and the one for Flute, Viola and Harp were quickly written in 1915, an unusually fruitful compositional year, the violin sonata posed difficulties for the composer in the following year.

He struggled with the finale in particular, and was only able to send the work to the publisher Durand in April 1917. Its diff...