G'day Bob,
to continue somewhat off topic... I'm going to respectfully disagree with you.

A singer is still a musician (and no, I don't sing myself*). It's just that their instrument happens to be their voice instead of a guitar, or (as in my case) a trombone, or a piano etc.. The voice even has strings (vocal chords), a resonance chamber (chest and oral cavity), a "bow" (the breath), so one could even argue (very loosely) that it belongs to the string family

A good singer will put at least as much effort into perfecting their instrument as any other good musician, just as a poor singer will put in as little effort as they can get away with, just like any other poor musician (instrumentalist(?)).

Some will have more native talent, some will have less, again, just like any other musician, but please don't think of singers as not being musicians.

In my work with the singers at church and in the musical societies I play for I have the great privilege of working and being associated with some extremely good musicians. They all work very hard to make their performance the best they can with out differentiation to what instrument they play, be it artificial or natural.

*Actually I do sing a pretty good tenor solo:
Ten or twelve miles away, so low you can't hear me

--=-- My credo: If it's worth doing, it's worth overdoing - just ask my missus, she'll tell ya laugh --=--
You're only paranoid if you're wrong!