Fair Use in Copyright .
The Berne Convention has a “Fair Practice” provision and a “Free Use” provision: the “Fair Practice” provision has a 3-step test; while the “Free Use” provision allows quotations as long as the extent is justified by the purpose; the WTO extensively discussed each element in a resolution.
(song written, produced, and performed by TS; video by a concert-goer, embedded, used here non-commercially for academic purposes)