Riddle

We are starting a riddle everyday or so, and there will be trophies everytime you get one correct. Make sure you don't search the web so it would be fun!

As just a starting riddle, here it is, first one to tell me below gets 3 trophies, good luck!

Inside an egg, my song sits waiting, for you to hear it, while you are bathing

P.S. This is Harry Potter based