Go Van Gogh! Tuesday's MEDICINE BALL CARAVAN blossoms with a little radio sunshine for your late morning (11am-noon Central Standard on 88.7FM locally orwww.krvs.org): Brass Bed, Bird City, Susan Cowsill, Brother Dege Legg, Anders Osborne, Bas Clas, Super Furry Animals and Morphine. Also: classics by Butterfield Blues Band, David Bowie and Thunderclap Newman.