On today's show, we look back into our archives to a favorite conversation from 2019 with Dan Kennefick, associate professor of physics at the University of Arkansas, author of No Shadow of a Doubt: the 1919 Eclipse That Confirmed Einstein's Theory of Relativity . Plus, Robert Ginsburg, of KUAF's Shades of Jazz, stops by the studio to discuss the Northwest Arkansas Jazz Allstars Youth Ensemble. And, we have a roundup of all the local live music to be had before the holidays are in full swing.