Guitar Pro is a little the reference when we speak about software for guitarist. To the program, everything a palette of tools to compose or study the guitar but can be also the other instruments. Guitar Pro uses by default a double display(posting) partition(score) classic / tablature decorated with a representation of sleeve of the guitar (and of a keyboard of piano) indicating the position of fingers. We post(show) or mask at leisure the one or other one of these representations to adapt the interface to its level and its style. Guitar Pro manages up to 256 tracks what allows him(her) to play a piece by including all the instruments, each with the own partition(score) there. The edition(publishing) is made either on the classic partition(score) or on the tablature. In both cases, it is enough to click in the place or one wants the note to put down(to deposit) him(it) there (in the mouse for the classic partition(score), in the keyboard to seize a number of place of sleeve). It is fast and particularly ergonomic. Some tools come