What are the two names used for the black-key notes on a piano?

What are the two names used for the black-key notes on a piano?

• A. Sharp and flat
• B. Augmented and diminished
• C. Natural and accidental
• D. Major and minor

Answer: (A)

Black keys have two possible spellings because they sit halfway between two white keys, and they are enharmonic to those neighbors. In equal temperament, a pitch can be named as a sharp of the lower white note or as a flat of the higher white note. For example, the black key between C and D can be called C sharp or D flat, depending on the musical context (key signature, harmony, or melodic line). The two names reflect this dual naming. Other options don’t describe this naming convention: augmented and diminished are interval types, natural and accidental describe whether a note is altered, and major and minor refer to scales or chords, not the specific black-key naming.

Black keys have two possible spellings because they sit halfway between two white keys, and they are enharmonic to those neighbors. In equal temperament, a pitch can be named as a sharp of the lower white note or as a flat of the higher white note. For example, the black key between C and D can be called C sharp or D flat, depending on the musical context (key signature, harmony, or melodic line). The two names reflect this dual naming. Other options don’t describe this naming convention: augmented and diminished are interval types, natural and accidental describe whether a note is altered, and major and minor refer to scales or chords, not the specific black-key naming.