The art of improvisation cant really be explained detailed enough to put any justice to it. Its magical (when everything sounds great at least), its something that comes from you, but can be influenced by others.

For example:

In my opinion, most songs are crap; not because i don't like them, but because i would hate copying a musician note for note all the time; granted, not everyone is like this, and you get thousands of mini-steve-vai wannabes running around. That is okay though, whatever floats their boat.

Creativity is something needed for a good improv guy to happen, and a great deal of time. I've spent the last 7 months working improv, and its worth it.

How old are you?