One of the first activities I participated in after arrival in Mexico City was to attend a concert at Chapultepec Castle. The concert was performed by university students and was quite professional for that level. Unfortunately, I wasn't able to take any pictures of the performers due to it being a distraction for them.
FYI, this castle is most famous for being the home of Emperor Maximilian I and Empress Carlota. I took this exterior shot as I was walking up the hill to the castle.