This is the little book I co-authored with Jeff Price.
IMHO, it summarizes the complexities of basic music copyright better than anything else (even though it’s now a few years old). I’ve also become increasingly aware that it’s widely read; because I hear many people quote from it (often in front of me…without knowing I co-wrote it).
In any case, it’s not (and never was) meant to be comprehensive. However, if you can grasp the fundamentals laid out in this little book, it will serve as a solid foundation upon which to add more nuanced (and recent) elements.
I’m embedding it here, as I don’t want it to “disappear” from the internet: