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Why Recordings From World War I Aren't Public Domain
An anonymous reader writes "While Disney and others have done a great job pushing the end date for works entering the public domain ever further forward, most people have assumed that anything from before 1923 is in the public domain. However, it turns out that this is not true for sound recordings, in part due to an accidental quirk in copyright law history — in that Congress, way back in 1909, believed that sound recordings could not be covered by copyright (they believed the Constitution did not allow recordings to be covered), and thus, some state laws stepped up to create special copyrights for sound recordings. A court ruling then said that these state rules were not overruled by federal copyright law. End result? ANY recorded work from before 1972 (no matter how early it was recorded) won't go into the public domain until 2049 at the earliest."
UK I found this.
How long does copyright last for?
Copyright generally lasts for the lifetime of the creator and then to the end of the 70th year afterwards. So for Elgar, say, who died in 1934, his original music came out of copyright in 2005. However copyright also exists in the editing, arrangement and reconstruction of previous music compositions and only expires 70 years after the death of the editor, etc. Copyright in recordings lasts for 50 years.
http://www.thefrms.co.uk/copyright.htm