I don't like getting songs from a cd, I get Martin and Ron to do it, better Martin cos he sight reads for voice, that way I only get their version. When I do learn a song it is because the melody has caught my imagination and I find myself humming it usually there are "mistakes" which I leave in, next, pitch the key for power, tone and ornamentation. The difficult bit, learning the words, just sing it over and over again, funny though, the way I learn songs is that one line cue's the next and if the line goes the song goes, must be a memory thing I am not really conscious of it. When the three of us are learning a new song who ever leads has usually a firm grasp on it and we move the key a semi tone at a time til we find the key that the harmonies work the best, a couple of times I get pushed out of my comfort zone but it is for the greater good. Maybe someone can explain but the less familiar I am with a melody the easier i find the harmony maybe it is an imprinted memory thing!