Have been reacquainting myself with more of Jeff Buckley's music ever since Kired put up a review of the play on his blog.  The blending seems almost obvious now that it exists - many kudos and much gratitude for the mind that first realized it. 
Oddly, or maybe not, the first adjective that popped into my mind to describe your review was luscious - as in richly satisfying to the senses or the mind - it seems that also describes "The Last Goodbye."  TY for the excellent piece.