10. The sound of silence
Music publishers for the late avant-garde composer John Cage sued Mike Batt for plagiarism in 2002. They claimed Batt's song, 'A Minute's Silence,' ripped off Cage's '4'33,' which also contained absolutely no music or vocals.
Even though copyrighting silence would seem to be impossible, Batt agreed to settle the case out of court by paying a six-figure amount.
Silence, it seems, is not only golden but it is also potentially worth millions.