Monday's MEDICINE BALL CARAVAN on KRVS (11am-noon Central Standard on 88.7FM locally or krvs.org) spotlights the latest by John Trudell, Byron Knott, Taj Mahal & Keb' Mo', Bonsoir Catin and The Rayo Brothers. Also: The Record Company, Balval, Beausoleil, Grateful Dead, Buffalo Springfield, Loggins & Messina, Joni Mitchell and John Coltrane.