Wale dropped a new mixtape in advance of the November release of his second album. (Josh Sisk/FTWP)

- Chuck Brown with the National Symphony Orchestra? Sounds good to us. The Godfather of Go-Go will be part of the NSO’s free annual Labor Day concert on the National Mall, which this year celebrates the music of Brown, John Philip Sousa and Duke Ellington. Chaka Khan will also be part of the tribute to Brown. The concert is at 8 p.m. on Sunday, Sept. 4.