String Quartet No. 9 is the fourth that Wernick has written for the Juilliard Quartet. A commission by the Philadelphia Chamber Music Society, Wernick's ninth string quartet was premiered by the Juilliard in November, 2015 and subsequently taken on tour. "The first movement's affect (marked 'Assertive, Aggressive') [compares] to Rockport's forbidding coastline in the eyes of the first. settlers. This was an apt analogy since the work's musical language is, in today's vernacular, 'gnarly.' [The second movement]...a 'never-ending throb of repeated notes'...the effect of steadily diminishing life-force, though with a 'final burst of hope from the solo cello.' Again, the composer made intriguing use of many of the different ways stringed instruments can produce sound." Geoffrey Wieting, The Boston Musical Intelligencer