“Applying Professor Abel’s sound technology to the fifteen voices of Capella Romana creates an audio experience that few if any listeners will have ever heard. These disembodied voices, evoking the holy spirit of God, seem to come from everywhere and totally envelop the audience. … Put this Blu-ray Disc in your player, and push the Pure Audio button (if it has one). In short order, you will be transported to a literal and figurative audio heaven. Lost Voices of Hagia Sophia also will take you on a moving spiritual journey that will stay with you long after the final echoes have receded into the distance. Discs like this one that combines the very best in performance with the very best in sound are a rare source of revelation and will surely become a favorite demonstration disc at the annual audio/video trade shows. Highest recommendation.”