This album is so beautiful on so many levels. The quality of the vocals is amazing. Their tone and blend are exquisite. The arrangements of the chants with piano and strings takes them to a whole different level musically. Listening to them brings peace and calm to troubled mind and spirit, even if one is not particularly religious. I wish each track was twice as long! Recommend playing on loop. The early tracks on this album seem to be the same as on the non-deluxe version, with a few extra added on to the end. For some unknown reason this album is cheaper so buy this one and get the whole thing! It’s worth it!