A comment on this post on the offertory antiphon asked about the verses. I’m happy to report that we have a book of verses online and in print – the original Gregorian ones – plus a simplified version by Rice.
Here is the verse attached to Sunday’s antiphon. Amazing isn’t it?
Hello,
The Offertoriale Triplex is exactly what you need.
It is affordable and you get the st Gall and Eisenberg neums.
Regards,