Warner Brothers were pioneers in the implementation of motion picture sound technology in the 1920s with Don Juan and The Jazz Singer, among others [0]. Which is to say the experience of going and seeing movies was shaped by Warner’s risky investments in those technologies when they were new. There are actually allusions to this in Singin’ in the Rain [1].

[0] https://www.britannica.com/art/history-of-the-motion-picture...

[1] https://en.m.wikipedia.org/wiki/Singin'_in_the_Rain