[youtube]http://youtube.com/watch?v=obGiZxO1L0E[/youtube]
Zeuhl is pretty darn wierd. And its not japanese(though this band is) but french. Made up by a french band named Magma. Sung in a "alien language" called Kobaïan. It sounds like... Well THIS quote from a reviewer from Pitchfork media.
"[Z]euhl sounds like, well, about what you'd expect an alien rock opera to sound like: massed, chanted choral motifs, martial, repetitive percussion, sudden bursts of explosive improv and just as unexpected lapses into eerie, minimalist trance-rock"