virtuoso
     adj : having or revealing supreme mastery or skill; "a consummate
           artist"; "consummate skill"; "a masterful speaker";
           "masterful technique"; "a masterly performance of the
           sonata"; "a virtuoso performance" [syn: {consummate}, {masterful},
            {masterly}, {virtuoso(a)}]
     n 1: someone who is dazzlingly skilled in any field [syn: {ace},
          {adept}, {champion}, {sensation}, {maven}, {mavin}, {genius},
           {hotshot}, {star}, {superstar}, {whiz}, {whizz}, {wizard},
           {wiz}]
     2: a musician who is a consummate master of technique and
        artistry
     [also: {virtuosi} (pl)]
Source: WordNet® 2.0