Acclaim

  • “… in Bartók’s monstrously difficult viola concerto, Díaz … had the piece under his fingers as firmly and elegantly as Serkin had Mozart, or Heifetz had Tchaikovsky.”

    — Philadelphia Inquirer

  • “… put the viola in the hands of Roberto Díaz and any preconceptions evaporate within several measures … [he] surely made believers out of those at the Phillips Sunday afternoon.”

    — Washington Post

  • "The first half also had its brilliant moments, chiefly in the hands of violist Roberto Díaz, who just ripped wonderfully into the Bartók Viola Concerto."

    — Buffalo News

  • “After intermission, Díaz and NSO concertmaster Jun Iwasaki performed together as soloists in Mozart’s Sinfonia Concertante in E-flat major. [They] gave beautifully synchronized performances, each conveying a welcome degree of exuberance.”

    — Nashville Scene

  • "The Kansas City Symphony concluded my weekend with the extraordinary violist Roberto Díaz, whose Bartók Concerto displayed warmth and incisive detail. In the big Romantic tunes, Díaz' viola sang like the gutsiest of mezzo-sopranos, while the rapid filigree had a delicate sheen."

    — Kansas City Star

  • “… a rich, deep, mellifluous tone, impeccable intonation, an attractive, even vibrato, a nimble left hand, a smooth bow arm, and an excellent sense of timing and tempo. All these qualities make him a real star of his instrument …”

    — American Record Guide

  • "Always an electric presence when playing solo, former Philadelphia Orchestra principal violist Roberto Díaz has rarely exhibited so much nuance and charm as in these works recast by one of the 20th century's great violists, William Primrose."

    — Philadelphia Inquirer

  • "The Viola Concerto is a most attractive work and Roberto Díaz is a persuasive and accomplished soloist, he receives excellent support from Guerrero and the Nashville orchestra."

    — MusicWeb International

  • "With a world-class sound, his serious and dramatic approach to the Schnittke Viola Concerto is among the best we've heard this year..."

    — El Mercurio

  • "Díaz’s flawless intonation, impeccable high notes, and emotional range gave the impression that this was exactly the way Brahms intended this music to be played."

    — Boston Music Intelligencer