I can’t see the passage but I think that they are in love and the bride is what is standing between them. Without the bride, they can be together
The word that best describes the tone in this stanza is: happy.
This stanza was taken from the poem I Hear America Singing, by Walt Whitman. It's a poem of patriotism, of pride of each and every person who helps build America and make it what it is. Everyone is important: the carpenters, the mechanics, the masons, the mothers, the wives. All of them sing their melodious songs of freedom and opportunity.
By giving the reader a wider and broader sense of recognition of such object, person, emotion, you name it.
for example: the dog walked past me towards its owner.
or
The beautiful brown labrador flounced past me towards its loving owner.
It gives you more detailed information making the reading material more interesting, keeping the reader's attention.
It contributes to the mood depending on what you say and how you say it.
for example: The solemn gray skies.
The gorgeous sparkling lights.
Her books slipped out of alignment while she was learning about periodic time.
Alignment and periodic , those are really interesting words...
Greetings!