There are many examples of word-painting where the meaning of the words is reflected in the music.
The use of dynamics is important with dramatic dynamic contrasts and much use of dynamic shading.
The opening words "Could be! Who knows? There’s something due any day..." are tentative and questioning and this is reflected in the quiet pianissimo dynamic.
As Tony builds up his confidence there is a crescendo to forte at the words “It may come cannonballing down through the sky”. The notes are sung marcato (accented).
Towards the end of the song at the words "The air is humming", the word humming is illustrated by high violins.
Although the song closes in D major, Tony’s final held note is not the tonic D that we might expect. Instead it is a C natural. This unexpected note gives a feeling of looking forward and that ‘something is coming’.