Whitman chooses to use the word "Singing" in his poem "I hear America singing" to emphasize how he can hear the different voices of America expressing themselves in what they do every day.
Explanation:
The tone of this poem is undoubtedly a happy one, of joyfulness. By repeating it many times, it helps convey this feeling.
The author describes how he hears each of the citizens of America "sing".
He describes each of their voices and does so with pride and joy for his nation.
