One of my goals during the holiday period is to finish an intro jingle for CQ multimedia. We'll need special-purpose songs as well, but a general-purpose clip to "sound like CQ" will come in handy, similar to the NPR or XM channel themes. An idea I quite like is to take samples of field recordings from around the city and incorporate them into the melody.
Unfortunately, I'm not sure DC has enough of a sonic character for this kind of thing. In San Francisco, I'd put in the sounds of trolley cars. In New York, shouting and car horns would play a role. But what sounds like DC? Once I've taped the Metro, I'm not sure where else to go, other than lawmaker speeches. Any suggestions from locals?