Hey Everett...

As a piano guy I tend to focus only on the black and white keys....but that's just me.
I like the fact I have 88 choices.

Seriously though the primary focus is the range of the tune.
Range and key don't necessarily have a lot to do with each other.
If it is fairly narrow almost any key can generally work.

It really depends on the vocal range of my singer.
Since I am usually working with one vox I have some flexibility as I'm dealing with a single vocalist.


Can't find the stairway to 'heaven'...but I know where the elevator is.

Each of us has cause to think with deep gratitude of those who have lighted the flame within us" - Albert Schweitzer.