I recommend getting used to the demorecord function with notepad and using the codex before attempting a scripted video. I would mess around with various emotes and character placement so you can get familiar with how the demo play back reads the information in notepad. It can be frustrating and play on your patience at first, but in the end taking your time to learn the mechanics will pay off 
I'm sure the other editors will have feedback for you as well. I recommend taking it all in.. Good Luck!
You can see my videos on youtube under xxgmanxx . I just released Phantasmo X in this forum.
My Tools -
Excel
Magix Movie Edit Pro
Fraps
notepad
Patience, Peanutbutter Cookies and Bottled Water
I've been trying to figure out how demo record files work and after 2 days of messing with them I see this is gonna be a bit harder than I thought originally >.> mainly due to not being used to the coordinate system and not knowing the emotes well... So I may eventually get this done, but I highly doubt it...
The video idea is thus...
Vahzilok and Dr. Aeon sing "Still Alive"
Obviously need 2 different voices to sing the 2 parts.
Should take place in Vahzilok's layer for it to work...
This is roughly how I broke up the song and what's to happen in planning...
Aeon: This is a Triumph. I'm makeing a note here: Huge Success. It's hard to overstate my satisfaction... Vahzilok Science (Dr. Aeon walks into Vahzilok's Layer
Vahzilok shows 5 dead and revived heros. Aeon says "Triumph". Clipboard emote -notes down "huge success" Aeon is really happy? Some sort of celebration emote)
Vahzilok: We do what we must because we can. For the good of all of us.
Aeon: Except the ones who are dead (show pile of body bags)
Vahzilok: But there's no sense crying over every mistake. You just keep on trying till you run out of cake. And the science get's done. (distracts Aeon back to the success)
Aeon: And you make a neat gun. (Aeon looks at Vahzilok's arm)
Vahzilok: For the people who are still alive (Vahzilok points at Aeon)
Aeon: I'm not even Angry. I'm being so sincere right now. Even though you broke my heart (quick scene change Aeon's on the ground) And killed me. And tore me to pieces. And through every piece into a fire. As they burnt it hurt because I was so happy for you.
Vahzilok: Now these points of data make a beautiful line. And we're out of beta. And we're realing on time. So I'm glad. (Vahzilok operates on Aeon)
Aeon: I got burned. (Aeon on operation table)
Vahzilok: Think of all the things we learned. For the people who are still alive.
Aeon: Go ahead and leave me. I think I prefer to stay inside. Maybe you'll find someone else to help you. Maybe Arachnos. THAT WAS A JOKE. HAHA. FAT CHANCE. Anyway, this cake is great. It's so delicious and moist. Look at me still talking when there's Science to do. When I look out there, it makes me GLaD I'm not you. I've experiments to run. There is research to be done. On the people who are still alive. And believe me I am still alive. I'm doing Science and I'm still alive. I feel FANTASTIC and I'm still alive. (Aeon turned into a vahz minion. Calls up Recluse and says he's still alive)
Aeon: While you're dying I'll be still alive. And when you're dead I will be still alive. (sees Vahzilok surrounded by Arachnos minions)
Aeon: STILL ALIVE (x2) (sighs at being turned into a "zombie")