Sophie, I find that really interesting. I never understood why my voice was so deep in the morning. I just thought it was because that is the time when I feel the sexiest or something.

As for the key I prefer, it is difficult to say because right now I am still trying to figure out what key is best for me to sing in and it keeps changing as I strengthen my vocal range.
I don't mind playing around with the key to figure out something that will suit my voice

Bonnie