Delia created a "choir texture" for the middle movement of Amor Dei and reused it in Tutankhamun's Egypt and Ways of Seeing.^[1]

Amor Dei has four movements so he probably means the second movement, Rorate Coeli, though the same makeup is used at half speed in the first movement and reappears in the last movement, at the start of which it appears without anyone talking over it, so that is what we use here.