Question

For much of the twentieth century, musicologists treated the widespread European adoption of equal temperament tuning in the eighteenth century as an unambiguous triumph of rational acoustic optimization. Under the orthodox account, earlier tuning systems—such as meantone and just intonation—were inherently defective compromises that restricted keyboard modulation to closely related keys. The mathematical standardization of dividing the octave into twelve logarithmically equal semitones was thus framed as an inevitable teleological progression, freeing composers like Johann Sebastian Bach to explore all twenty-four major and minor tonalities without acoustic dissonance.

However, archival and acoustic research has progressively undermined this triumphalist narrative. Contemporary treatises and performance records demonstrate that late-Renaissance and Baroque musicians did not view unequal temperaments as technical impediments, but rather as expressive resources. The slight acoustic disparities between keys in meantone temperaments endowed each key with a distinct affective "color" or character. Far from celebrating equal temperament, many prominent eighteenth-century theorists vigorously resisted it, arguing that uniform intervals sterilized harmonic tension and obliterated the expressive individuality of different musical modes.

To explain why equal temperament ultimately triumphed despite this aesthetic resistance, recent scholarship has advanced a socio-economic reinterpretation. This model suggests that the transition was driven less by intellectual consensus among composers than by the commercialization of domestic music-making in the late eighteenth century. The emergence of mass-manufactured fortepianos for bourgeois households created an unprecedented demand for stable, versatile instruments that could be maintained without constant visits from specialized guild tuners. Equal temperament, which allowed an amateur pianist to play a broad, published repertoire without re-tuning between pieces, became an industrial necessity.

While this socio-economic framework effectively dismantles the technological determinism of earlier histories, it requires significant qualification. Elite compositional practices were not purely passive reactions to instrument manufacturing; rather, composers actively developed new chromatic idioms that capitalized on the newly available enharmonic modulations, creating a reciprocal feedback loop between artistic innovation and market pressures. The standardization of musical pitch was therefore the result of a dialectical negotiation between artistic desire and commercial expediency.

Which one of the following most accurately describes the organization of the passage?