The master violist Lawrence Power works with student Lea Hennino in a masterclass at the Italian Institute of Paris on one of the most significant pieces of the viola repertoire: Paul Hindemith's Viola Sonata No. 4, Op. 25. Composed in 1922, the tightly-constructed sonata puts viola and piano in an equal dialogue, conversing in Hindemith's captivating, rhythmically-driven musical language.