Copyright exists to provide incentives for people to create culture.
Copyright gives creators some control over their work
Copyright puts limits on the authors control of their work
Copyright gives full control of the work to the author/artist
70 years from when the art/culture is composed/written.
7 years from when the art/culture is composed/written.
70 years from the death of the creator of the art/culture.
57 years from the death of the creator of the art/culture.
Fair Use protects the rights of creators who want to incorporate others work in theirs.
Fair Use is generally the same as quoting someone.
Fair Use allows the use of another's film in your film, under some conditions.
Fair Use allows you to use others work as long as you pay them.
That is no longer Fair Use of the material
You don't need to worry about Fair Use, just do it the least expensive way.
You need to pay some small fee to the original author/creator.
When the copyright material is transformative
When you are not using the material for essentially the same purpose.
If it's expensive to license or difficult to track the owner.
If we comment on the performance or something about the used art.