He'd been slowing down a bit by rerunning old episodes of his show with new live introductions for the past couple of years; quite acceptable as a programme of pre-1960 music (often played from the original 78s) isn't based on new releases and his personal recollections of these artists/tunes can't go out of date; the man is a treasury of obscure anecdotes and personal memories. So glad it's all recorded and preserved for future generations of listeners.
Edited to add: And this is why I love this show and am glad old eps get rerun. Today's is from 2008 and just played a Duke Ellington recording of a tune that sounded nigglingly familiar but only a specific bit. Brain finally coughed up the answer as it was ending ... those few bars are performed by whistling and studio orchestra as the theme music for the 1949/50 radio version of The Saint that starred Vincent Price! Which I only heard for the first time a couple of years later when the entire run of that series was released on CD (and radio dramas of that era didn't, as a rule, bother giving info about their theme music) so even if I'd caught the original 2008 airing I wouldn't have had that connection to make. So now, thanks to today's repeat I know what that intriguing little tune is: "Pyramid" (the recording I just heard was by Duke Ellington)