Thursday's MEDICINE BALL CARAVAN on KRVS (11am-noon Central Standard on 88.7FM locally or krvs.org) rolls with the latest by Billy F. Gibbons, Grand Nathaniel & the Ghost, The Amazing Nuns, Aimee Lay and The Record Company. Also: some Black Sabbath, John Mayall & the Bluesbreakers, Jimi Hendrix Experience, Patti Smith Group, Lou Reed and Richard Hell & the Void-oids.