I heard that JW was asked to go back and do Imperial March-y stuff for ANH. And from his own lips too.
Vader's voice in ANH... interesting. If i'm right, it's the same recordings but without the over-the-top reverb? I like the old one just fine. New one sounds more 'in line' with the newer movies but I liked the difference.
Hey - where is 'How is that possible?' from? It's the added Vader line in ESB and I'm wondering where they pulled it from?