That's right, GuitarHacker. I note the Harry Fox Agency responded with a limited You Tube license as a step to help in that area.
https://www.harryfox.com is a must read resource.
With respect to the question:
"How far I wonder of a change does it have to be before its not a copyrighted line? and am I just expressing an idea and so not under copyright if I change it."
The answer involves, among other qualifications, changing the material 15%. There's a ball of wax to keep you occupied for a spell !