Authenticity in art is the different ways in which a work of art or an artistic performance may be considered authentic.Denis Dutton distinguishes between nominal authenticity and expressive authenticity.The first refers to the correct identification of the author of a work of art, to how closely a performance of a play or piece of music conforms to the author's intention, or to how closely a work of art conforms to an artistic tradition.The second sense refers to how much the work possesses original or inherent authority, how much sincerity, genuineness of expression, and moral passion the artist or performer puts into the work.