Triquetra takes the form of a free fantasia on the familiar hymn Old Hundreth. The tune appears in full in four different guises – harmonically and rhythmically altered on each occasion. Fragments of the melody are also used to generate new ideas, most notably in the contrasting middle section where the opening phrase of the hymn appears in inversion. As to the title, the Triquetra (from the Latin triquetrus meaning three-corned) symbol is representative of the Christian Trinity and in that respect relates to the final line of text in Old Hundreth, also known as the Doxology. Triquetra was written for Stephen Cobb in recognition of 30 years outstanding service as conductor of the International Staff Band of the Salvation Army.