Commentary Par XVII 133-134

The metaphors and similetic comparisons (the poem is a 'cry,' equated with the wind; its human subjects, metaphorically mountain peaks [or, according to not a few, treetops]) now make the poem lofty, that is, 'tragic' in its stylistic reach.  See C.Par.XVII.127-129.  If there the author insisted on the comic essence of his work, he now insists equally vehemently on its tragic (or stylistically lofty) dimension.