As some of you may know, this is not the first book I have written on the world of the Bass Guitar, in fact I think it is the thirteenth (or something like that). But I felt that I had not created something really and totally (not that previous teaching methods are not!) useful, for those whose goal is to make music their profession, or, at the very least, for those who want to be able to play to the best of their ability, in as many musical contexts...