German music publisher claims that nothing is public domain until its copyright runs out in every country

Boing Boing: "Last week, Universal Edition AG, a German publisher, used legal threats to shut down International Music Score Library Project, a Canadian nonprofit collaborative effort to collect the scores for old public domain music. Universal Edition claimed that since Canadian copyright on music scores lasts for 20 years less than European copyright, this public domain music was actually in copyright (somewhere), and that made it illegal to reproduce it on the Web."