Why do you think the piper smiled a little smile?

The piper's little smile likely reflects a mix of satisfaction and contentment, perhaps in response to the joy his music brings to others or the success of his performance. It may also signify a sense of connection with the audience, as if he understands the power of his art to uplift spirits. This subtle expression could indicate a moment of personal fulfillment, reminding us of the simple pleasures found in sharing one's talents.