Wini Shaw & Dick Powell w/Dick Jurgens & his Orchestra - Lullaby of Broadway (via Gold Diggers of 1935 soundtrack)
One of the most famous Busby Berkeley numbers is actually a short film-within-a-film, which tells the story of a “Broadway Baby” who plays all night and sleeps all day. It opens with a head shot of singer Wini Shaw against a black background, then the camera pulls back and up, and Shaw’s head becomes the Big Apple, New York City. As everyone rushes off to work, Shaw returns home from her night’s carousing and goes to sleep. When she awakens, that night, we follow her and her beau (Dick Powell) from club to club, with elaborate large cast tap numbers, until she is pushed off a balcony to her death. The sequence ends with a return to Shaw’s head, as she sings the end of the song.
Sequence is viewable on youtube starting here (part II here)