virtuoso

Short definition from Wiktionary

Noun

1. 1
   An expert in virtù or art objects and antiquities; a connoisseur.
2. 2
   Someone with special skill or knowledge; an expert.
3. 3
   Specifically, a musician (or other performer) with masterly ability, technique, or personal style.

Adjective

1. 1
   Exhibiting the ability of a virtuoso.