Read the following paragraph and answer the question. Give ONLY the answer, no other words or explanation.

For example:

Answer: <most likely answer, as short as possible>.

Paragraph: Casaer was played by a woman ( the part was written for a castrato , except they do n't castrate people anymore , so they have to use women instead ) , which was interesting to see . Also , there was a fairly small ensemble accompanying the singers , so there were no walls of sounds or great impressive fanfares . But the music was good .

Question: What may I have just seen ?
A opera
A performance of Casaer, with a woman playing the role and a small ensemble.