I can make two suggestions; post-processing or better lighting.
Post-Processing
Fancy method: get a color checker card
http://www.bhphotovideo.com/c/produc...cker_Card.html
This printed card has precise color patches. Film this card next to your subject. Details to process your video afterwards to be worked out later.
Simple method: use a piece of white cardstock and hold it next to the subject. It's a much simpler process to achieve whitebalance against this.
Even simpler method: we can teach you to use the whitebalance controls of some video editor.
Lighting method
Simple approach: could try 1 or 2blue colored light bulbs along with/or a white light bulb on a two-bulb lamp. You could also try spotlight bulbs that are marked as daylight color. Would be nice if you could find some kind of swivel attachment so you can put it in the ceiling socket and use like a real spotlight.
http://www.swivelier.com/id20.htm
http://www.lightbulbs-direct.com/bul...ylight&cat=all
More pro: I believe led arrays are the latest in lighting.
http://www.bhphotovideo.com/c/search...45&srtclk=sort
Starting at $49,$89 These are really excellent and give perfect daylight, only problem with the cheaper ones is that there's not enough light output, unless you put it basically next to the music stand. You could probably get 2-3 of the cheaper ones and put them around, that could be pretty nice. Haven't tried it myself.
If looking at bulbs, look for a color temperature of 5000 or more. 3000 is the yellowish light of incandescent, equivalent to sunrise color, and 5500 is a standard for average noon daylight (which varies a lot). 6000+ is for a cloudy day. The 5500 one would be best matched to the daylight setting of your camcorder.