John:

Without knowing what the emails say, it makes it pretty hard to figure Who they think they are writing to.

It could be the children's book author John Bianchi - http://www.johnbianchi.com/

Or seeing as you mentioned music, it might very well be John Balsbaugh - http://www.geocities.com/vienna/opera/8195/

Or maybe the people are demented and think they are emailing a person because of the name of a song - http://www.ezfolk.com/ukulele/Tabs/johnb/johnb.html

Why not email them back and ask them who they think they are writing to. Anything else is just guesswork?

Michael Ross