Today's latest Blues On The Radio Podcast Of The Day, celebrates its 400th show packed with great music from Mississippi MacDonald (pictured and ahead of his show at The Tuesday Night Music Club in Coulsdon tonight), Chicken Shack, Etta James, John Lee Hooker, Eric Clapton, Fleetwood Mac, Jimmie Vaughan, Geoff Achison, Dan Burnett, Nina Simone, Billie Holiday, Catfish, BB King and Stevie Ray Vaughan.