Take the example of Richard Wagner composing the opening to "Rhinegold".

以理查德?瓦格纳创作《莱茵河的黄金》的前奏曲为例。

He recognized that the orchestral opening to the "Rhinegold", which he must have carried about within him yet had never been able to put into form, had at last taken its shape within him.

他意识到，久存于心中、却始终未能谱写成的《莱茵河的黄金》管弦乐前奏曲终于在他脑海里形成了。