Mr. V said this in an interview I'm reading from a few years back, is it a dead idea?
"We're also going to hire a choir for that. I'm going to be working on something we call a metal opera, but it's not opera in this kind of Avantasia style; not at all. There's a theme running through the entire album lyric-wise. The music is connected, likewise. We have 30 people of the Norwegian "elite" of metal are going to be on it. I've written the lyrics and music to that one. But it's kind of a long-term project. Everybody has their bands going on tour, so..."
http://www.maelstrom.nu/ezine/interview_iss10_94.php
"We're also going to hire a choir for that. I'm going to be working on something we call a metal opera, but it's not opera in this kind of Avantasia style; not at all. There's a theme running through the entire album lyric-wise. The music is connected, likewise. We have 30 people of the Norwegian "elite" of metal are going to be on it. I've written the lyrics and music to that one. But it's kind of a long-term project. Everybody has their bands going on tour, so..."
http://www.maelstrom.nu/ezine/interview_iss10_94.php