Today’s Music: This is Trinity Sunday and our recessional is “Holy, holy, holy!” Not only does the last line of text refer to “God in three persons, blessed Trinity,” but “holy” is repeated three times frequently throughout the hymn. (The first line of the hymn is, of course, the English paraphrase of the Sanctus: “Sanctus, sanctus, sanctus, Dominus Deus sabaoth” – Holy, holy, holy, Lord God of hosts.) The trinity has been musically acknowledged for many centuries. Throughout the Medieval period, practically all sacred music was written in a triple rhythm. This makes some of these old sacred pieces sound rather lilting to our ears, but it is the result of respect for the trinity.