Plays: Farmer in the Dell / soft Old MacDonald / medium Turkey in the Straw / hard Too soft, too hard - but never to the point. Perfectly boiled eggs are a science. But no problem for the Moo BeepEgg. Simply store with the eggs, boil together with the eggs and wait until the Moo BeepEgg sings. No matter what water temperature you start with, no matter at what altitude you cook at, or how many eggs you boil at a time, with this egg timer your egg will be perfect.