Thursday's MEDICINE BALL CARAVAN on KRVS (11am-noon Central Standard on 88.7FM locally or krvs.org) stays groovy with tracks by Lane Mack, Dayna Kurtz, Bas Clas, Viatones, Shrugs, Durwood and Brass Bed. Also: Patti Smith, MC5, Eno, Roxy Music, Pete Townshend and more.