<u><em>Answer:</em></u>
A-"could I revive within me/her symphony and song .."
<em><u>Explanation:</u></em>
The author thinks back on the incredible music he heard in that vision.
He can depict it to us, yet he can't generally return to encountering that extreme inclination. But then he's yearning for that experience, for the feeling of marvel that vanished with that vision.
The speaker needs to "resuscitate" the music, to breath life into it back. In the event that he could take advantage of the intensity of that vision, he envisions that it would rouse him, and enable him to make astonishing things himself.
