Free concert tomorrow night (7:30 pm) at Speckels Organ in Balboa Park. The concerts start in June and end in August, so not too many left this year. I will go if I can and shoot some video.
Update: I had a very busy day, but I was able to catch about 30 minutes of the concert because I live a few blocks from the park. The organ at night was an impressive sight, as was the crowd. Good, old fashioned entertainment. I recommend the experience.