Passage Summary: A critic discusses a specific, sad piece by Bach, noting it reflects the text it's based on rather than Bach's own mood, because true master artists like Bach never use their work to vent their personal emotions.

Reasoning: The critic establishes that master artists never create to express their own feelings and explicitly identifies Bach as a master artist.

Analysis: In 'Must be False' questions, we are looking for a direct contradiction of the established rules. The strongest rule provided is a universal negative: master artists *never* create to express their own feelings. Combined with the fact that Bach *is* a master artist, we can conclude with absolute certainty that Bach never created a work to express his own feelings. Therefore, any answer choice claiming that Bach did, in fact, create a piece of music to express his personal emotions must be the false statement we are looking for.