Are you near the DuPont Circle on Tuesday evenings around 6:30?
If you are, you might want to check out the nice music program at the Tabard Inn.
Sunday-Tuesday there is usually some type of duet that will play from 6:45-9:45. While they have a playlist of sorts, the musicians will always take request.
Tonight I had the pleasure of listening to Lena Seikaly and Donato Soviero. I highly recommend this venue. Is cozy and quaint - generally a great plce to relax.
The Tabard in is located at 1739 N Street NW, Washington, DC 20036.