For the second season in a row, March was guest conductor month for the Knoxville Symphony Orchestra’s Chamber Classics Series. This past Sunday’s concert at the Bijou found conductor Noam Aviel on the podium for a program that seemed to follow its “Mediterranean Masters” theme on paper, but, in reality, had a delightful textural eclecticism that defied time period. Ms. Aviel’s direction through the afternoon was crisp, accurate, and entertaining, with tempos that bubbled energetically against the richness of the well-balanced chamber orchestra.