What makes the tone different in these two pairs of lines from the excerpt? And finding she was left alone, Went tiptoe to the Telephone (second stanza) With Courage high and Hearts a-glow They galloped, roaring through the Town, (third stanza)
The tone in literature is an attitude of a writer toward a subject or an audience. The tone can be suspenseful because "she was left alone" or "went tiptoe to the telephone."