That's a good point, Bob. Some people come to the Mudcat to ask for the chords for a song, and they think that there's a certain 'right' key that the song should be in.

Ideally, a person should select the key that's best for their voice.
If that key is impractical, then one nearby.

If Will Fly's friend is selecting keys just because that's what he found on the Internet or because that's the key a famous singer uses, then he could be way off from what's good for him.
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Joe, I've got to agree that $125 a lesson sounds too expensive.

However, voice lessons may be just what Will's friend needs. So they cost money. As the damsel said in 'Auntie Mame':

"But sweetheart, what's money FOR?"