This CD will be best appreciated by those who admire the 'authentic performance movement' in baroque music. Christofellis's voice isn't what I call beautiful, but their is no denying that his ability is extraordinary, if not bizarre. The highlight for me is the sublime 'Lieto cosi tal volta' from Pergolesi's little-known opera Adriano in Siria and I recommend buying the CD for this aria alone. Christofellis is also a musicologist and it is interesting to hear an informed take on musical issues such as ornamentation. Anyone wondering what the castrati may have sounded like can get a pretty good idea from this recording.