
Originally Posted by
mayneverhave
This is the example I would use as well, though I disagree with you. Take the numerous allusions tied into the opening of The Waste Land -
April is the cruellest month, breeding
Lilacs out of the dead land, mixing
Memory with desire, stirring
Dull roots with spring rain.
I believe there are (at least) allusions to Whitman's When Lilacs Last in the Door-yard Bloom'd, along with the Prologue of The Canterbury Tales. With these allusions (and without going into a long analysis of the poem), Eliot summons up the mood and themes of both these works - the elegy of Whitman and vibrancy of Chaucer - and ironically juxtaposes his modern poem, which is deficiant in the vitality of those two alluded to poems.
The point being: although one can simply enjoy the music of The Waste Land, you pretty much entirely miss the point if you don't get at least some of what Eliot is referencing. He's not just referencing other works to be a snob, but because the poem would be entirely different without them. Not realizing Eliot is quoting Tristan und Isolde, for instance, means that Wagner's opera - with its mood of loss and failed love - is lost to the reader. An incomplete poem is presented.