Tuesday's MEDICINE BALL CARAVAN (11am-noon Central Standard on 88.7FM or www.krvs.org) airs tracks by Alejandro Escovedo, Bob Dylan, Tom Waits, Wilko Johnson / Roger Daltrey , Dex Romweber Duo, Cowboy Junkies, Zig Zag Wanderers, Steve Earle, Creedence Clearwater Revival, Anders Osborne, Lee Ranaldo and Television.