'Diacritical Marks was written for the Chiara Quartet in 2011 and is in eight short movements. I have a huge anxiety about string quartets; they are normally meant to be giant expressions of a composer’s emotional life. Here I focused on details: a tiny dot above a letter a tiny swivel of the bow. The first and last movements are energetic and driving and the middle movements are more lyrical rhapsodic and/or floating. The quartet is bound together by a piece of drone music found in movements 3 5 and 7 in which the second violin and the viola play an interlocking repeating pattern ad infinitum while the cello and first violin spin very long outrageous lines on top. The piece lasts just under 20 minutes.' —Nico Muhly

Canticle. Par JALBERT PIERRE. Canticle (String Quartet No. 6) was commissioned by the Chiara String Quartet. It consists of seven movements, highly contrasting in character, with movements I and VII serving as similar bookends to the overall arch of the work. The piece opens with the quartet members striking various crotales, producing bell sounds that eventually blend with the string quartet – evoking the title, Canticle. The faster, pulse-oriented music requires the players to use glass rods on their instruments and at one point quickly moves back and forth between alternating rhythmic subdivisions, producing extremely rapid metric modulations. The last movement blends the string quartet with the bowing of the crotales to produce an ethereal, other-worldly finale to the canticle. Pierre Jalbert / Niveau : Avancé / Répertoire / Quatuor à Cordes