Cappella Romana are specialists in Byzantine chant, and this album is a stunner. The release is an SACD hybrid multichannel recording. If possible, opt for the physical disc rather than the digital download for this one. The release has both 2-channel and 5.0 surround formats, with 192k/24bit resolution. Hearing this recording in surround made me feel like I was standing in the Hagia Sofia when these hymns were new. I am so looking forward to the next installment.