Well, I just picked up my first fretless last week. I had been using it for whatever, just playing along with my normal tunes to try to get used to the pitches, and the more accuracy it obviously requires. When that became boring, and not too much of a challenge, I decided to look into some recordings that were done with a fretless to further explore the possibilities. While I had always heard a lot of Jaco Pastorius, I had never bothered to find any of his music, until now. I downloaded "Portrait of Tracy", and decided I was going to learn that. Wait a minute.....I didn't even know 80% of these harmonics existed, or were usable!!! This is the first time in many years I had to set my instrument down due to frustration, due to an inability to figure it out instantly. I even went so far as to look up tabs on it, which is something I always refused to do! Still struggling with the intro and the first measures, haven't even attempted anything past that yet. I don't know whether I will ever make it through this piece without giving up, and that is something I haven't done in years. Jaco was nothing short of a musical genius, and anyone who hasn't looked into his music, is missing out. Such a shame he had to leave us so early. What were your thoughts the first time any of you started learning Jaco's compositions? Please share!