Several people have asked for an example of a CW Office set to simple plainchant. here it is for Evening Prayer of Trinity 3, 2020. The full text including readings is given here and I will Live-stream singing it on Facebook.
Plainchant is based on eight modes and these chants are in that sense modal and traditional. The exact form of the traditional plainchant psalm tones does not work well with English and rather than serving the text tends to dominate the words and rather butcher natural English rhythm. This doesn’t seem to matter so much with, for example, the Coverdale psalms, where it is not our natural idiom anyway. However, with texts in contemporary English is is very obvious.
After Vatican 2 Roman Catholic monastic and religious communities quickly gave up trying to squeeze English words into the exact pattern of the traditional tomes and adapted the tones into the sort of patterns in these texts given here. They work very well and have a gentle rhythm.
Despite singing the Office daily since I was in my mid-teens I don’t have a very good singing voice and can’t pitch a note without help. I use a tenor recorder to play over the tones and chants. It works for me. It may not be the most beautiful noise but it engages parts of my brain that simply reciting the texts does not. I really recommend that you try singing every Office. The liturgy is song!
For more on the use of chant with English texts see Reginald Box SSF Make Music to Our God. the New English Hymnal contains some chant settings of the psalms in this style of psalm tone, as do most Roman Catholic Hymnals (Celebration Hymnal, Laudate) and books of settings of the psalms for responsorial use.
I am currently using the Authorised Version of the Bible for Office readings. I think mixing ‘traditional’ and contemporary language works well and don’t understand why it is not done more often. Most churches already do it with hymns. The AV txts of the readings are in the booklet above.