The first listed is the winner- Production (Picture):
“THE BROADWAY MELODY”, “Alibi”, “Hollywood Revue”, “In Old Arizona”, “The Patriot” (silent)
Saw none of these nor any of the nominated performances.
By the 1990s, this WILL change.
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Appropriately, here’s “Finding His Voice”, a 1929 Max Fleischer cartoon about how optical soundtracks on films work:
ROG