Keen eyes watch the key turn and which pocket it goes into. If there is reason later he may need to retrieve said key he would at least have an idea where to start.

Erik needs no light or lantern to move about the opera house, but the candles do help illuminate the most curious figure. What terrible fashion was this, and what was that? For some reason the man wore a vegetable upon his lapel like it was some grand military decoration.

He says nothing, quite curious to see what this man is on about, and remains watching from behind his trap door.