I have always been enchanted by this poem and this rather, am crinkling my nose here, iconic 1980's romantic musical. Olivia Newton John, Electric Light Orchestra, and Gene Kelly must have had a great deal of fun with this movie. You can't help but move with the songs when you hear them, even if you don't happen to have on roller skates!
In Rush's take on Xanadu, you find yourself there. As the lyrics/words to the poem open up, the music shows you rippling streams, woods, and you feel the sun and wind on your skin. The excitement of surrealism envelopes you in the sounds of Rush. And then you find loss in the immortality. What is there to live for? 'A mad immortal man..' Haunting song.
Coleridge is the catalyst for these creations. It was his poem, derived, it was believed, from an opium induced dream, which spurred so many readers to interpret it musically and theatrically. It has an interesting history and has often generated sparks of controversy concerning meaning, when it was written, and even why it might have been written. (going back to the author chose blue curtains because he liked the color blue!--which is a whole different post!) It is considered one of his 3 most famous works.
I, for one, am thankful for whatever spurred these lines to be written. You have to believe it is magic~