For instance, i want to build something very simple, and in the future, i plan to make more advanced MIDI controllers, adapted to my needs. What i plan for future is a kind of drumpad controller, with another kind of button disposition, more adaptable to the hand, and, to create a technique for it, like Piano, in Piano we have books to upgrade our skils in speed, musical theory and accuracy, like Bona or Pozzoli, then i want to creat something like that. What do you think of the idea? Now i'm going to read the Wiki ^^ Thanks for it ;)