Monday evenings in 1932 and 1933, an NBC radio program called Five Star Theater presented episodes of a comedy series called Flywheel, Shyster and Flywheel starring Groucho and Chico Marx. Only a small amount of audio from these broadcasts still exists but in 1988, someone found copies of almost all of the scripts in The Library of Congress.
A number of different groups recorded those scripts with Groucho and Chico impersonators but the most ambitious effort was done in the early nineties for BBC Radio. They took some liberties with the material, sometimes combining two or more of the original scripts to make one episode, sometimes interpolating songs. In one, their Groucho sings "Lydia the Tattooed Lady" which the real one sang in the 1939 movie At the Circus. The tune probably hadn't even been written when Flywheel, Shyster and Flywheel was originally airing.
Still, the shows are entertaining and every so often, the BBC puts them up on their website for our listening pleasure. "Every so often" includes now. For the next 26 days, you can listen to the first episode at this link and others will be available there in the future. Don't thank me. Thank Chris Collins, who always lets me know when they're back up so I can alert you. As I just have.