quoting "Vertigo"?
Having viewed the film twice, on both occasions I thought that I heard a brief horn theme or note (clarinet, I am guessing) that sounded almost exactly as it came from Alfred Hitchcock's Vertigo (1958), scored by Bernard Herrmann. Another musical theme or note, this one of the orchestral-strings variety, sounded similar to what one can hear in Vertigo. I did not see any citations of that film in the closing credits, so perhaps the similarity is coincidental or unintentional?
Also, what is the name of the jazz piece that plays during the party dance sequence, and where does the Fats Waller piece play?