This song was a Christmastime classic while I lived in the United States. You would hear it everywhere on the radio, during school performances, concerts, and church events. Somehow it must have slipped past us, because until now it was not part of our quartet’s Christmas repertoire.

The last time I heard this piece live was during a choir performance in an old church in Bad Kreuznach. Their delivery inspired me so much that I immediately made a note on the concert’s program to arrange O Holy...