The Rise and Fall of the City of Mahagonny on Stage Videos - Los Angeles

On tonight's episode of MOM, 'A Taco Bowl and a Tubby Seamstress', Christy is concerned that she and Bonnie might lose their apartment when Bonnie locks horns with the tough new building owner, Rita (Patti LuPone).

Broadway husband and wife Will Swenson and Audra McDonald recently filmed themselves singing a seemingly random duet- the theme song from the hit '70s show LAVERNE AND SHIRLEY. Check out the fun a capella performance, made for Broadway Sleepout, below!