If you don't know, the concert you saw is only one of a whole programme lasting several weeks from July to Sept. They are called the Promenade concerts, and will span several centuries worth of orchestral and choral music over the weeks. If you attend at least 5 other Promenade concerts, you get to attend the last night. This is the one that usually gets broadcast on a mainline channel, the others are lost in the depths of BBC2 and Radio 3, none of which are available in Long Island I suspect.

LTS