Answer:
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Explanation: The title "Two Kinds" refers to two types of daughters: the obedient kind and the independent kind. Jing-mei feels that she has disappointed her mother time and time again by being the latter kind and asserting her will again and again against her mother's wishes.
What do those two kinds have to do with the piano pieces "Pleading Child" and "Perfectly Contented"? The title "Two Kinds" refers to two types of daughters: the obedient kind and the independent kind.