Lauded by the Philadelphia Enquirer for his "electric presence" and by the American Record Guide for his "rich, deep, mellifluous tone, impeccable intonation," and "excellent sense of timing and tempo," viola master Roberto Díaz is the featured guest in the Quad City Symphony Orchestra's final Masterworks presentations of the 2021-22 season, the gifted musician bringing his talents to Davenport's Adler Theatre and Rock Island's Augustana College in April 2 and 3 performances of Pines of Rome.