The leaking on TOC has begun

Well for me being a singer, I'm always interested to know how the vocals were done.
In regards to an album like Rage for Order I'm curious to know how hard it was to work with all the keys/loops etc. they were using?

I listen to that CD all of the time and it still holds up extremely well. Always seemed like it took another 15 plus years for everyone to catch up what they did.