“This release by Cappella Romana first appeared in late 2019 but acquired new relevance and promotional energy with the Islamization of the Hagia Sophia in mid-2020: the ‘lost voices’ of the title now seem to be lost permanently, although recordings in the giant sixth-century structure had long since already been banned. What’s heard here is a pioneering endeavor… Even the basic CD yields remarkable sounds, and for audiophiles with the equipment and wherewithal to go deeper, this will be an essential purchase. … Cappella Romana has a remarkable sound with lots of head tones, and even listeners with no interest in the engineering wizardry will find the singing and the music compelling. An extraordinary release.”