The baritone John Carol Case, who died on 29 December 2012 at the age of 89, was one of the voices which was strongly present in my musical life when I first started exploring classical music. Amazingly, he retired from public performing in 1976 and though, in theory, I could have seen him perform life during my student days in Manchester neither memory nor my scrapbooks confirm this. But of course, it wasn't his physical presence that created the dominant effect, it was his recordings.
John Carol Case retired from the concert platform in order to concentrate on teaching, but he wrote music too; his carols are published by Banks Music Publications. (see the listing at worldcat.org)