The Knoxville Symphony’s exuberant MoxCar Marketing + Communications Masterworks Series kicks off with vibrant orchestrations of art in Mussorgsky’s Pictures at an Exhibition and Adam Schoenberg’s GRAMMY-nominated Picture Studies, which has been described as a “21st-century Pictures at an Exhibition.” Arutiunian’s show-stopping Trumpet Concerto features the impeccable William Leathers whose trumpet solos have been noted for their “sparkling clarity.”