From the 1950s to the 1980s, American corporations commissioned a vast array of lavish, Broadway-style musical shows that were only for the eyes and ears of employees. These improbable productions were meant to educate and motivate the sales force to sell cars, appliances, tractors, soda, and a thousand other products. Though most of these shows were lost to the universe, some were recorded and distributed to convention attendees via souvenir vinyl...