The poor clares were nuns they sang in a closed choir. i think thats what made them so surprising.
Hope this helped :)
Eggs – The eggs are the star of the dish and are what gives the cake its lift and light spongey texture. Flour – Cake flour is preferred but all-purpose flour will work as well. Sugar – The white granulated sugar will add just the right amount of sweetness and aid in the overall texture and browning of the cake
The answer you may be looking for is "focus"