Episode 1: The Jazz Singer
While it may seem that Rodrigo and Brian pulled all this out of their...they actually did some research...and watched the movie. Alternative History Podcast believes in giving credit where credit is due and citing sources.
https://en.wikipedia.org/wiki/The_Day_the_Clown_Cried
http://www.telegraph.co.uk/films/2016/05/16/the-first-oscars-what-happened-in-1929/
https://en.wikipedia.org/wiki/The_Jazz_Singer
http://www.imdb.com/title/tt0018037/
https://www.wired.com/2010/10/1006warner-bros-premieres-jazz-singer/
https://en.wikipedia.org/wiki/Vitaphone
https://en.wikipedia.org/wiki/Al_Jolson