 First, arguments from intersubjective variation transpose. Actual variations in frequency sensitivity exist among perceivers; for instance, subjects differ in which frequency they identify as middle C. If there is no principled way to legislate whose experience is veridical, pitch might be subjective or perceiver-relative. One response is that, in contrast to the case of unique red, there is an objective standard for middle C: fundamental frequency. But, whose pitch experience has the normative significance to settle the frequency of middle C?