Nouns

(n)ace, adept, champion, sensation, maven, mavin, virtuoso, genius, hotshot, star, superstar, whiz, whizz, wizard, wizsomeone who is dazzlingly skilled in any field
(n)virtuosoa musician who is a consummate master of technique and artistry

Adjectives

(s)consummate, masterful, masterly, virtuosohaving 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”