Piano recital

There was a young pianist that was a prodigy that was playing his first concert. At the end, everyone cheered except one person in the front row. He lowered his head, and a friend said, “Why so sad?” He replied, “Look at the man in the front row; he was not impressed.” The friend said, “Who cares that’s one person. He replied, “That Is my teacher. I could careless if I impress the whole world, but his is the only opinion which I care and value.”