FRIDAY: >> Celebrate Fairfax is Friday through Sunday at the Fairfax County Government Center (12000 Government Center Pkwy.) — there’ll be food, drinks, and concerts from Better Than Ezra, Rick Springfield, the Smithereens, and Tom Cunningham Orchestra. $10. Who says we don’t love Virginia? Rock on, Fairfax! >> Over at the Freer and Sackler galleries, Ramesh Misra, “master of the sarangi” will perform at 7:30 p.m. in the Meyer Auditorium. Misra was a student of…