Tucson Symphony Orchestra - Mei-Ann Chen, conductor - David Morgan, tuba - Samuel Coleridge-Taylor: Danse nègre from African Suite - Ralph Vaughan Williams: The Wasps Overture - Ralph Vaughan Williams: Concerto for Tuba - Edward Elgar: Enigma Variations - Box office opens 90 minutes before performance. Concert Comments with the conductor begin 60 minutes before each performance (complimentary with ticket).