Quote (Lifesong @ Jan 21 2010 01:59am)

I have been in enough music performances to recognize that he was slightly nervous do to the tone and the shaking of his voice, but I expected it to be worse after your description.

He doesn't have bad tone or a bad voice, but I would suggest to him as a friend that he take in deeper breathes when singing. Air is the key to singing and playing wind instruments. Maybe he can look up some videos on singing from some free video voice lessons or something. When you take in air properly and use it, it can help you relieve nervousness while singing and also make sure that your tone isn't inconsistent. Tell him to keep it up.