In terms of introducing people to the concept of engelblau, the song volare is a great tool, encapsulting tolkien's three key elements of faerie: recovery, escape and consolation. Recovery, seeing blue as through the eyes of a child, becoming one with it to the point where you paint it all over yourself.Escape, flying into the blue sky, and escaping the real earthly laws of physics, in a world where it is possible to fly higher than the sun and hear a personalized playlist of angelic music ----una musica dolce suonava soltanto per me.
and consolation, though the dream seems to evaporate at dawn, yet the blue is reflected in the eyes of the lover. The only difference being consolation in tolkien's world comes from outside the natural, which begs the question: is Modugno elevating eros or abasing it: it is divine, or animalistic? and why must we distinguish..can't animals be holy?
conversely, aren't angels portrayed as desiring human lovers in the first part of Genesis?
In an astonishing proof of Tolkien's cauldron theory, there are 295 versions of Volare listed on secondhand songs including one by David Bowie.