Sinatra/; 2 distinct versions of Night & Day.  The 1957version, arrangement by Nelson Riddle is a relentlessy swinging Big Band version emphasizing the elation experienced by Sinatra, a great singing actor. It is positive. energetic and most convincing of the singers devotion to the peron about whom he singsall Night & Day. The arrangement does ot feature the verse or introductory segement to to the main chorus.
In vivid contrast is the 1972 version arranged by Don Costa. The verse  beginning with " Like the beat,beat, beat of the like the drip,drip.drip of the rinfalls, like the tick.tock tick of the stately clock" creates a musical tension from the repeating notes and words. The verse does set the mood for what follows is a symphonic approach unlike the Big Band version of 1957. Here, Sinatra is more reflective, no less engrossed in thinking about that special person than he expressed in he Riddle arrangement. But, now he is more reverential and less exclamatory.
I believe that this verse, like any verse in popular song, can really seduce the listener by setting a mood, with music and words, for what's to follow. See which version you prefer.

https://youtu.be/qn_cfbK9M14 

https://youtu.be/mGGirB4XOmI