Question

It was, perhaps, the narrow limits to which he thus confined himself upon the guitar, which gave birth, in great measure, to the fantastic character of his performances.

What does this excerpt reveal about the narrator of the story?

Answer 1

What this excerpt reveals about the narrator of the story is that It provides an inference drawn by the narrator.
The narrator isn't completely sure of what he is talking about - but he made an inference based on some details or evidence.