In fact, we had no class today.
Remember the question "if a tree falls in a forest and no one is around to hear it, does it make a sound?"
Well then, in that same spirit, what is the answer to the question "if it's a class day, and there are no students, does the instructor still do a demonstration?"
Of course he does.
Here's a landscape demonstration from today, totally imagined, 25"x20".
This photo is a more correct version of the painting.