I'm a pretty terrible singer too, really.I guess I have the excuse that usually when I sing, I'm playing the piano too. My attention is totally split between two things. If I focused just on singing, I'd be great. Honest. ^_~
My problem is less one of key and tone, and more just the fact that I'm so quiet.I rarely speak beyond a very quiet, hushed tone. I think I've pretty much forgotten how to shout.
So it's difficult for me to get any real volume behind my singing voice...