Comparison and Contrast of William Blake's Poems Introduction (Innocence) Piping down the valleys wild, Piping songs of pleasant glee, On a cloud I saw a child, And he laughing said to me: "Pipe a song about a lamb!" So I piped with merry chear. "Piper, pipe that song again;" So I piped, he wept to hear. "Drop thy pipe, thy happy pipe; Sing thy songs of happy chear:" So I sung the same again, While he wept with joy to hear. "Piper, sit thee down and write In a book, that all may read