Several prominent independent country artists will perform free shows on the Opry Plaza in Nashville this summer. Dale Watson and John Arthur Martinez will kick off the series on the weekend of June 11-12. BR549 close the series on Aug. 14. Other participating artists include Dave Alvin, Robbie Fulks, Elizabeth Cook, Mandy Barnett, Old Crow Medicine Show, Two Tons of Steel, Shannon Lawson, Gail Davies, Trent Summar & the New Row Mob, Darrell Scott, Jon Langford & the Pine Valley Cosmonauts, the Derailers, Jim Lauderdale, Billy Joe Shaver and Bruce Robison, among others.