Just watched this short on the 42nd Street DVD. First, we get glimpses of the Fox (before merging with 20th Century Pictures), M-G-M, Paramount, RKO, and Universal studios before landing at Warner Bros.-First National. We then see many stars like James Cagney getting a cigarette from a stagehand, or Pat O'Brien boxing with a former professional. We also see Busby Berkeley and Bobby Connolly choreograph some pretty women through their dances. And then before we see the results of Hugh Herbert's scene, we see how the sound is recorded on film not to mention how the negatives and positives are put together. And then we see Herbert's scene which isn't funny at all and abruptly ends the short. Oh well, the rest has some interest for anyone who likes these rarities.