Blake Shelton's free surprise pop-up concert is today

Country crooner performing at Cowboys Dance Hall at 6:30 p.m.

SAN ANTONIO – Blake Shelton is performing a free surprise pop-up concert at Cowboys Dance Hall on Friday.

He posted to Twitter Wednesday that he’ll be in the Alamo City to perform and admission will be free on a first-come, first-served basis for fans age 21 and up.

Doors open at 6:30 p.m. on Friday but you can start lining up for wrist bands at 10 a.m.