http://www.youtube.com/watch?v=AvmyP2Uxs8k
You do not need to use the video but as webcams go this is the best HD Skype friendly cam for the price if you couple this with a good headset (like a logitech or a plantronics over 15 bucks) you are set for the best possible audio and video on the net
http://www.amazon.co.uk/Logitech-960-00 ... 111&sr=8-4
But if you are a singer use your headphones and your microphone - why not the quality will be awesome

worth considering

of course the iphone with its headset is pretty good too if you can afford it

feel free to make your recommendations here