This is a little late for this post, this post was made in 2011 and now it's 2020, but I just typed in how to find out what key you sing in in band in a box and this is one of the things that came up. So, a few things crossed my mind; they have made it much easier these days all you have to do is go to bar settings and change the key in that section and change it back wherever you want. I dont know nothing about using roman numerals for this, but it's just a suggestion. I am making this post now because it may help someone along the line. Now onto my original thought you can find out what key you sing in in band in a box by using the tool that helps you chord the son, use a keyboard that has thr screen that shows you what chord you are pressing, or even if you know some chords on the guitare, i go to ultimate guir and look at how to form the chords, then i strum the guitar and make something up to sing just in that chord. I can sing in a varity of different keys though, i am a high tenor; so i can sing in a high key eventhough i talk completely different key for a man. I mostly sing in the key of E, I learned this by using my keyboard that shows me the chords. Yamaha YPT 600 keybord that I purchased over 19 years ago at kmart. Anyway just a few thouts and a not to myself just to remember in case i ever forget.

Music is an expression that is a universal language, Never criticize anybody to harshly. They need time to grow but when they do, they do. Always be kind in what you say and do because the man upstairs is watching.