One interesting set of audio interjections comes from a large belled clock in the sanctuary, which goes off from time to time during the recording, especially during the Sanctus, a highly synchronistic event, as the use of bells during the Sanctus goes back almost a millenium. Bells and the Bible go hand-in-hand, like love and glove, and the union produces such poetic gems as those found in Exodus 28:
And beneath upon the hem of it thou shalt make pomegranates of blue, and of purple, and of scarlet, round about the hem thereof; and bells of gold between them round about:
A golden bell and a pomegranate, a golden bell and a pomegranate, upon the hem of the robe round about.
And it shall be upon Aaron to minister: and his sound shall be heard when he goeth in unto the holy place before the LORD, and when he cometh out, that he die not.