The chief delight of this new treasure from The Cardinall's Musick is not the miserere of the title but the Missa Cantantibus Organis, an extraordinary, 12-part mass by seven composers, written as a tribute both to Cecilia, patron saint of music, and to Palestrina, patron saint of polyphony. All seven were maestri in chapels and churches across Rome, and members of the Vertuosa Compagnia de' Musici di Roma, a self-help group for musicians – and forerunner of today's Accademia Nazionale di Santa Cecilia. Each took a theme by Palestrina and developed a separate section of the mass, using three choirs of four voices, and sung here with the brilliance and clarity we have come to expect from this outstanding ensemble.