Do I understand correctly that out of 8,000+ songs in the DT, HFA has discovered 15 to which they object? This HFA "issue" is for you to resolve Max, but my inclination would be to challenge them to provide proof of a valid copyright and their authority to represent the copyright holder for each song they object to, then take those song titles and post them in a separate list noting that the lyrics were formerly available at Mudcat but have been removed on demand of the copyright holder and/or his/her agent.

I see a future wherein music freely available on the web will gain in popularity because it will be performed by 'catters and their kindred souls, while that guarded by the copyright police will progressively lose its currency (in terms of both popularity and economic value) because it will not be played or performed. It is they, not we, who seem stuck on the horns of a dilemna.