From Kris Waite - thanks.
I was tipped off on this one by a Liverpool-supporting mate of mine. Here’s Paul McCartney on Latin, from the Liverpool Echo:
Sir Paul said he hoped the work would sound particularly good in the cathedral with its big acoustics.

He said it was particularly interesting to work with a text partly in Latin.

Recalling his schooldays at Liverpool Institute (now the Lipa arts college of which he is lead patron) Sir Paul said: “I was not very good at Latin. But I liked it.

“I always used to encourage my own kids to learn a bit of Latin because it’s the root of the English language and all the romantic languages. Sometimes, when you are trying to work out what a word means, you can go back to the Latin root and I like that aspect.”
All best,

Kris Waite