hesperis, so far I haven't been able to find any reference on the MP3.com message boards to bands that have been forced by their labels to remove anything. If you have some more specific information about where to look, it would be appreciated.
I don't consider myself obliged to point out the following, but I will anyhow: I don't consider every request for enforcement of copyright to be a form of thugee. Reasonable requests for reasonable monopoly privileges to be respected are, in a word, reasonable. Formerly, even when some rightsholders were unreasonable, we could hold our nose and put up with it, knowning that the copyright would expire after a reasonable time. But the scope and duration of copyright have become so extreme that the problem of unreasonable rightholders has become one that con no longer be accepted as simply a necessary cost of encouraging the arts through grants of monopoly.