I came across this book
Frau Musika (by Alberto Basso)
The life and works of J.S. Bach
Available in parts on Google Books
http://books.google.it/books?id=sX_Fr3lj7pMC&printsec=frontcover&dq=frau+musika&hl=it&sa=X&ei=Lz0zUbS1JZCEhQeo6YHoAg&ved=0CD0QuwUwAA
I would like to get it but it is quite expensive, does anyone have it? Is it worth buying?