Wednesday's MEDICINE BALL CARAVAN on KRVS (11am-noon Central Standard on 88.7FM locally or www.krvs.org) starts out soulful with tunes by Average White Band, James Brown, Marc Broussard, Raphael Saadiq, William Bell, Nick Waterhouse, Mavis Staples. Lee Dorsey and Brian Auger. Also: classics by Mountain, The Beatles and Spirit.