"Isaiah, Mighty Seer, in Days of Old"

When I recorded "Jesaia, dem Propheten" for Sunday, I noticed a small connection between it and its text "Isaiah, Mighty Seer, in Days of Old."  In the line "High on a lofty throne, in splendor bright," sung to this musical phrase:

the words "lofty throne" are sung to the highest pitches (D notes), giving a sense of that height.