I posted another radio program starring Judy with Grouch Marx, Mail Call #19, from January 9, 1943. I'm not sure, but this may have been the first time that Judy and Groucho worked together, but as with their later work, they sound delighted to be in each others company. Also starring on the show are Betty Grable and Jose Iturbi. Judy sings I Never Knew, and with Iturbi, performs a version Of The Joint Is really Jumping that out boogies the film version by at least three bushels of hep!
Here is the link: