Tuesday's MEDICINE BALL CARAVAN on KRVS (11am-noon Central Standard on 88.7FM locally or krvs.org) airs the latest releases by Jolie Holland & Samantha Parton, Eilen Jewell, Gregg Allman, Van William featuring First Aid Kit, The Malvinas and Lost Bayou Ramblers. Also: classic live Allman Brothers, some Jefferson Airplane and more.