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| C | D | E | F | G | A | B | C | D | E | F | G | A | B |
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
- the white keys are labeled with the character set
[ABCDEFG]
- the black keys are labeled by reference to the white keys,
using the modifiers 'sharp' (higher frequency than) and 'flat'
(lower frequency than)
- e.g., the key between the C and D key is called either
C sharp (C#) or D flat (Db)