I saw this earlier today on Idol Forums as well. While generally I appreciated the comments/explanation/knowledge that Slyver provided, I was very surprised to see the comment that "range" only refers to the chest voice (a popular, layman description). In my years of being musically involved, range means the full range of one's instrument -- whatever that is, from top to bottom (or vice versa). Again, I thought that this was a limited definition.
Quote:Generally when people say range what they mean is the range of your chest register. This is certainly what Randy meant. Haley's chest register range is above average, but nothing special. Its ~ 2.5 octaves give or take from what I have seen. In comparison, I think Adam Lambert is over 3 and Kurt Nilsen is over 3.5, I think pushing almost 4.
Different vocal registers are called such because you change your physiological state to produce sound in them. If you add up all the notes Haley can hit in a controlled manner I think it is over 4 octaves, which is none too shabby, but isn't ZOMG either.