Knowing what we know about Felix Mendelssohn and his artistic attractions and interests, it is exceedingly likely that he would have been superbly delighted with the Knoxville Symphony Orchestra’s adventure into A Midsummer Night’s Dream on this past weekend’s Masterworks concerts. Not only did the evening include Mendelssohn’s amazingly mature A Midsummer Night’s Dream concert overture, Op. 21, written when he was 17 years old, but also his Op. 61 incidental music for the play composed 16 years later that includes parts for two sopranos and choirs. Maestro Aram Demirjian didn’t stop there, though, adding excerpted Shakespearean text delivered as a clever narration plus the visual feast of ballet storytelling. The KSO’s partners in all this were Laura Beth Wells as the Narrator, sopranos Jacqueline Brecheen and Tori Franklin, the Webb School of Knoxville Chamber Singers, Pellissippi State Community College Variations, and 27 members of the Appalachian Ballet Company choreographed by Amy Morton Vaughn.