Mork & Mindy (1978)

S03E17 Mork and Mindy Meet Rick and Ruby

Remo dismisses Ruby, the expectant vocalist for the restaurant's band. In response, Mindy offers shelter to both Rick and Ruby, attempting to persuade Remo to bring them back. She proposes a wager, which leads Remo to agree to rehire the band. During one of their performances, Ruby goes into labor, prompting Mork to step in and take her spot on stage.