I didn't find out about this one until this morning.
The Association of Iberoamerican Cultural Attaches in Washington DC is sponsoring the:
SECOND IBEROAMERICAN GUITAR FESTIVAL, in honor of the Venezuelan Guitar Master ALIRIO DIAZ.
October 20, 21 22 and 23
Jack Morton Auditorium of the George Washington University, on 805, 21 St., NW, Washington, DC
Sharon Isbin plays tonight.
There is a very interesing schedule. If you're in the area it's worth a look.
This is the website with detailed information.