Answer:
The ability to sing something particular to them.
Explanation:
In "I Hear America Singing" Whitman shows his admiration for America and the American people. Through the poem, he shows how Americans are an honest, hardworking, hard-working and life-friendly people. It shows how america is a happy and harmonious community, where each person, regardless of age or occupation, celebrates their life with a song that is unique to each one, but that is joyful and enthralling.