Mmario - I know exactly where you're coming from. I also have tried to learn, I understand the theory of identifying a note as written down, can pick it out on a piano, then either from the relative up's & downs pick out the next note, and I understand the theorys of time values .... I can even (if I know it well and given time) pick out and can hear to correct a melody line. Although the key will rarely be the original. But this is a very laborious process, and I get no sense of tune from the picked out notes, they remain as individual sounds. I cannot sight read, either to play or sing .. but I hvae a reasonably accurate musical memory and an awareness of relative notes or when a note is off pitch, (it sounds right or wrong). But I still can't sightread either to sing or to play music It's like a child who knows their letters but cannot make the jump from that to meaningful words.