In some cases, Eb and D# are identical in pitch in equal temperament?

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Multiple Choice

In some cases, Eb and D# are identical in pitch in equal temperament?

Explanation:
In equal temperament, the octave is split into 12 equal semitones, so there are 12 pitch classes. Eb and D# both name the same pitch class—the black key between D and E on a keyboard. The spelling just reflects different musical contexts (harmony or key), not a different sound. This equivalence holds in standard 12-tone equal temperament; in other tunings, the frequencies can differ.

In equal temperament, the octave is split into 12 equal semitones, so there are 12 pitch classes. Eb and D# both name the same pitch class—the black key between D and E on a keyboard. The spelling just reflects different musical contexts (harmony or key), not a different sound. This equivalence holds in standard 12-tone equal temperament; in other tunings, the frequencies can differ.

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