Hello my friend. I use my computer scanner, not the laptop which is more complicated for me. However, you have enlightened me a bit with your little explanations. Indeed I had not thought of the pixels. Currently, I control if there are not the pieces that I have shared with you, and turn to a digitization in this sense. I am very touched to see that you also share your opinions and councils on this forum, because from time to time, a small word, makes good; one feels that gents are interested, and communicate. For the tangos, at the violin level, I didn't get any answers, so there is no interest for me to put these parts. Thank you Lionel, for answering me ; it's really very nice of you . See you soon. Marceau