阅读下面材料，在空白处填入适当的内容（不多于3个单词）或括号内单词的正确形式。
There was once a King who liked music so much that he searched the world for the   _ （good）instrument there was. One day, a wizard（巫师）offered the King a harp（竖琴）.
The King took     to the palace, but     he started playing it, the harp was out of tune. Many other    （music）tried it, and they agreed that the harp was useless and the King had been cheated. The harp    （throw）out as rubbish.
A poor little girl later found the harp, and even though she didn’t know how to play,    （decide）to have a try. She played and played, the whole day through, for months and years, always with the harp out of tune, but playing better and better.
Then one day,    （sudden）, the harp started to play the most beautiful tunes. It was   __  magic harp, and could only be played well by someone willing to put in the necessary interest and effort.
The King heard the music from his window, and summoned（传唤）the girl to the palace. When the King saw the harp playing, he was  （fill）with joy. At that moment he made the girl his own private musician,  （give）her and her family many riches.