This is one lineup of the Cathedrals I had never heard before. The year was 1999. The performance was at National Quartet Convention, and the Singing News Fan Awards. Lead singer Glen Payne was not able to perform due to his illness, so he was replaced (though you could never actually replace Glen Payne) by group pianist Roger Bennett. Payne passed away the following month.
I’d say Bennett does a pretty good job for himself.