I think if there was a musical comparison to Ne vs. Ni... here's what would come close:
[YOUTUBE="http://www.youtube.com/watch?v=qXNrDrdsWGI"]Who's Afraid of (The Art of Noise[/YOUTUBE]
Tossing all sorts of musical and sonic ideas back and forth to create a central message.
[YOUTUBE="http://www.youtube.com/watch?v=mkNOXTSuZN4"]Theme of Secrets[/YOUTUBE]
A mental journey type of song.