Tuesday's MEDICINE BALL CARAVAN on KRVS (11am-noon Central Standard on 88.7FM locally or krvs.org) spins the latest by Boz Scaggs, James House & the Blues Cowboys featuring Roddie Romero & Smoov Ras and some Paul Thorn. Plus: we celebrate John Lennon's birthday with a slew of tracks along with some Beausoleil avec Michael Doucet, Elton John, ABBA, The Squires and Quintron.