Re: the use of music in scifi & fantasy
The opera performance of Plavalaguna in The Fifth Element
was set up so that Corbin could make contact and retrieve the stones from her.
Riva's chorus in TNG - Loud as a Whisper
helped him to communicate with others.
I suspect the use of music at the end of the most recent episode of Fringe
was meant to trigger a specific memory hidden in Walter's mind.
My name is Ozymandias, king of kings: Look on my works, ye Mighty, and despair!
Nothing beside remains. Round the decay
Of that colossal wreck, boundless and bare
The lone and level sands stretch far away.