Don't let the time slip by for Wednesday's MEDICINE BALL CARAVAN (11am-noon Central Standard on KRVS Public Media 88.7FM locally or anywhere via www.krvs.org ). Included are spins of Paul Simon, Can, Santana, Les Baxter, Pops Staples, Bas Clas, Swampcandy, Fantastic Negrito, SOAK, The Beatles and Jethro Tull.