Mainly Mozart at Balboa Theater in 2019 The Mainly Mozart Festival is coming back into form on Friday, June 11. The incomparable Festival Orchestra is scheduled to perform five concerts at the Del Mar Surf Cup Sports Park June 11-19. The repertoire for the festival was previously scheduled for the canceled 2020 festival. Highlights include Mozart’s Symphonies Nos. 39 and 40, Beethoven’s Symphonies Nos. Five and Seven, Haydn’s Trumpet Concerto, and Bruch’s Violin Concerto. It’s a strong cast of musical characters as is the roster of the orchestra. The roster is full of concertmasters and principal players from the top orchestras in North America.