Hadaway wi ye!

Expansion of acronyms is often helpful for nonexpert readers (anacronyms excluded).

I've been looking so long at these pictures of you / That I almost believe that they're real

Hail, blessed pipe! the invigorator of the weary, the uncomplaining faithful friend, the consoler of sorrows, and the dispeller of care, the much-prized companion of the solitary wayfarer!