Monday's MEDICINE BALL CARAVAN spotlights the latest by Wilco, Alabama Shakes, Gary Clark Jr., Makers Reel and another Bob Dylan demo from 1966 off of the new Bootleg Series Vol. 12. Also: some unreleased Zuider Zee (from 1973), Horace Andy and classic jazz tracks from Herbie Hancock, Charles Mingus, John Coltrane and Miles Davis.