Yes, this is a BROKEN minotaur lord's horn. All you bards out there would do best to stay away from it. Went back to my old mino horn, and I'm much better off. This is not much of a wind instrument, as I expected. Think about it. It's broken! What sort of self respecting bard is going to use a broken horn? Yes, that's right. Me.
But really, don't use it. It's not meant as a wind istrument, but as a quest component.