I really just wanted to understand and to respect the wishes of JFD as far as the pieces uploaded to the " Your MP3's Level 3" Section. The score I had used as one of my lessons many years ago was in the Aaron Shearer- Volume 1 book and is titled "Estudio by D. Aguado. It's identical to the PDF file in the Delcamp Level 3 list except for measure 7. This morning I went ahead and uploaded my version of the piece with a note that what I had played was slightly different from that listed in the Delcamp list.I see the difference but don't know what you want to prove. If it is really the same piece, one of you have made a mistake.