In 1935, William Randolph Hearst got into a hissy fit with Louis M. Mayer at MGM and took his movie company, Cosmopolitan Pictures, and its sole star, his mistress, Marion Davies, and her 11-room bungalow to Warners. One of the first films they made was “Cain and Mable” with Clark Gable. But the standard 45-feet height of the soundstages there wasn’t big enough for Hearst’s ambitions for the movie’s $400,000 grand finale. “I’ll sing You a Thousand Love Songs” was nine minutes long and featured a 90-foot pipe organ and 160 chorus girls. So Hearst paid Warners $100,000 to raise the roof of soundstage 16. What’s even more amazing is that they didn’t take off the roof and add the extra 30 feet on top. No! They jacked the whole structure up and added it to the bottom. If you want to know how they did that, it’s described in the Wikipedia page for Cain and Mabel

(What’s interesting is this photo shows that it was soundstage 7 but I guess at some point Warner Bros renumbered their soundstages because it’s now known as 16. ** UPDATE ** The Warner soundstages were renumbered perpendicularly after the new ones were added along Olive Ave.