As time passes, R.E.M. is being proved more and more wrong: Yes, go back to Rockville. Otherwise, you will miss a historic meeting of French horns and Fender amps when members of indie-rock bands Grendel and the Better Automatic perform with the Rockville Concert Band. Drummer and Resin Records founder David Arbury was commissioned by band director Vincent Patterson to create American Landscapes, a three-movement suite inspired by “natural scenes and experiences throughout the United States.” Adding Stratocasters and a backbeat to scores normally dominated by Sousaphones just might be the wave of the future. The fanfare begins at 3 p.m. at Rockville Civic Center’s Fitzgerald Theater, Edmonston Dr. & Baltimore Rd., Rockville. Free. (301) 309-3007. (Dave Nuttycombe)