CONCERT Go-Go's Godfather Chuck Brown, considered the pioneer of Washington's pounding go-go tradition, celebrates his birthday with a performance at the 9:30 club with Rare Essence. The 9:30 show is $25. 9 p.m. today. 815 V St. NW. 800-955-5566. (And for those of you strapped for cash, he's playing the free Live! on Woodrow Wilson Plaza series Thursday, noon-1:30, at 1300 Pennsylvania Ave. 202-312-1300.)
ON STAGE Poetry Fest The third D.C. Poetry Festival, founded to counter negativity in hip-hop and foster a poetry community, returns to Carter Barron Amphitheatre with stars from U Street's thriving scene and others from across the country. Kids from DC Scores and Duke Ellington School of the Arts take the stage early in the day, followed by adult performers, including Anisley Burrows, Charneice Fox, W. Ellington Felton, Brother Earl and others at 4 p.m. Free. 1-8 p.m. 4850 Colorado Ave. NW.
CONCERT Navy Band Show The U.S. Navy Band and Sea Chanters chorus perform one of their last summer starlight concerts before wrapping up the season on Labor Day. Free. 8 p.m. West steps of the U.S. Capitol. 202-433-2525.
LITERATURE The Last Word on Crosswords Matt Gaffney, who authored crosswords for Slate from 1999 to 2003 (and wrote "The Complete Idiot's Guide to Crossword Puzzles & Word Games"), tells the dark secrets of crossword creators to promote his book "Gridlock: Crossword Puzzles and the Mad Geniuses Who Create Them." Free. 7 p.m. Olsson's Books and Records Dupont Circle, 1307 19th St. NW. 202-785-1133.