Johnny Winter may look a bit more frail than he once did, but he hasn’t lost one bit of the virtuosic firepower that has made him one of the greatest of blues guitarists. The last time he played at The ArtsCenter in Carrboro, he was phenomenal. He returns to The ArtsCenter tonight, June 20, along with the sensational slide guitarist JP Soars, as part of the 9th annual American Roots Series. 919-929-2787, artscenterlive.org