Path
What to study before Enharmonic equivalence
Two spellings for one sound, and why choosing between them is never arbitrary. Below, the concepts that come before, in the order in which one explains the next. Signed in, you see the same path minus what you already hold: your path.
Notes and semitones
The seven letter names, the accidentals that alter them, and the semitone as the system's smallest step.
Enharmonic equivalence
Two spellings for one sound, and why choosing between them is never arbitrary.