Wednesday's MEDICINE BALL CARAVAN on KRVS (11am-noon Central Standard) airs the latest by Chris Smither, Goat Girl, Nathaniel Rateliff & the Night Sweats and The James Hunter Six. Also: some Lucinda Williams, Doc Watson w/ Vassar Clements, Dock Boggs, Bob Dylan, Valerie June, Velvet Underground, Steve Cropper & Felix Cavaliere, Sam & Dave and Charles Mingus.