From a Washington Post obit by Brian Murphy headlined “Harry Lorayne, the memory wizard of showbiz, dies at 96”:

While preparing for the 1983 wartime spoof “To Be or Not To Be,” Mel Brooks and his wife, Anne Bancroft, had to memorize the lyrics to “Sweet Georgia Brown” in Polish for one of the film’s opening scenes. After the shooting was wrapped up, Bancroft sent a thank-you note to the coach who helped them lock down a language neither of them knew.