https://www.musical-u.com/learn/how-to-freestyle-a-guitar-solo/
Ever vaporized into awe and envy as your favorite shredder picked up a guitar and pulled a face-melting freestyle improv out of nowhere? How do they do that?
We can all give examples of what we think is “freestyle”, but it’s a little harder to define the word. If we look at it’s cultural history, it seems that freestyle originated in a certain type of swim race, where swimmers are free to choose any stroke they want.
So while the word is found in many contexts, first let’s focus on three essential qualities that seem to describe the bulk of what is today known as “freestyle” guitar.