Silver bird  

Once upon a time there was a princess who was always happy because every day she was visited by a silver bird. This was her secret. But one morning her beloved bird stopped visiting her and this upset the princess a lot. Seeing this, the King announced he would hand her daughter to the young man able to return her joy. They began to reach the court all young men from the kingdom: a fisherman, a cook, a lawyer ... but none of them made the silver bird return. Then a musician came, and with his songs the beloved bird returned, and with it, the joy of the young princess.