When Act 2 of Fidelio is being poured out in the most glorious tones imaginable from Mattila, Heppner and Pape - who can possibly complain? Who would honestly want to replace any of them? Who can fail to be overwhelmed with gratitude to own this disc? If I continue to count our blessings, I might mention the splendid Robert Lloyd drawing us to a thrilling finale as Don Fernando; and Falk Struckmann a convincingly evil Pizarro. So it is certainly not complaining, but fulfilling a reviewer's obligation to tell all, when I admit that Jennifer Welch-Babidge is little more than adequate as Marzelline. One might wish for a purer vocal line in this role - like a Bonney or an Isokoski.