Classical Guitar Scales: the 5 shapes

[Howard]

諸位同學們，Dear All，

    OK, here goes: What is music?  Music is a system with rules and
    regulations  Its raw ingredients are sound and time  The basic units
    of sound are notes, or pitches  The basic units of time are beats.

    https://www.youtube.com/watch?v=LhrGeolItvw                                                   
 
    http://www.planetalkguitar.com/

    https://www.youtube.com/watch?v=cAFbEYqvYSU