Sicut cervus desiderat

Luca Ricossa posted his version of this chant at: https://youtu.be/zkVWc1nkFGw

Below part of the fb discussion of April 24:

Gregoriana: What I don't understand is the value of the virgas with episema in DeUS, apareBO and diES. What would you do when there were no episemas? Similarly for the episema on the high notes on faCIem and uBI. You seem to follow Laon here, but clearly show the Cantatorium. [...]

Luca: Those episemas, on top of a climácus, are due to a bogue in the St Gall notation. The Virgula represents one syllabic beat, if it is alone on a syllable, but only half a beat in in conjunction with rapid signs (in this case with dots). The sanktgaller climácus with a simple virgula on top corresponds to a dot, and you need a liniola ("episeme") in order to give it a full syllabic beat.
The notation of Laon is more coherent, having a dot on top of the quick climácus (semibrevis), and a virgula on top of the climácus with a brevis on top.
in St Gall, you will never find a climácus with a dot on top.
I followed the Cantatorium trying to respect every single sign.