At the risk of setting a quarrel new abroach, I point out this article from the Birmingham (England, not Alabama) Post about a legal judgment that a musicologist's work in reconstructing an orchestral piece was substantial enough to warrant copyright protection. It has not much bearing on law in the U.S., and for all I know, not much in the UK.
http://www.andante.com/article/article.cfm?id=24034 I will now proceed to duck out of the way of the hornets.