The Full Map of a Key
See how calm/tense, stability, and scale degrees fit together as one map.
🎯 Practice it: Up or Down? →Three Lessons, One Map
You've practiced three lenses for hearing notes in a key:
• Calm or tense — is the note in the key (calm) or outside it (tense)?
• Stability — among the in-key notes, does it rest, gently drift, or strain to resolve?
• Scale degree numbers — what role does it play: 1, 2, 3, 4, 5, 6, or 7?
These aren't three separate ideas. They're three altitudes of one map. The full tree shows all three layers at once.
Train your ear with these drills
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Three Lessons, One Map
You've practiced three lenses for hearing notes in a key:
• Calm or tense — is the note in the key (calm) or outside it (tense)?
• Stability — among the in-key notes, does it rest, gently drift, or strain to resolve?
• Scale degree numbers — what role does it play: 1, 2, 3, 4, 5, 6, or 7?
These aren't three separate ideas. They're three altitudes of one map. The full tree shows all three layers at once.
See It All At Once
Play any note below. Watch the path light up from the root through Calm/Tense (in the key vs. outside it), through the stability layer (Stable / Less Stable / Unstable), all the way down to the exact degree number — or the specific chromatic note.
Try notes inside the key, then notes outside. Notice how the path changes.
What the Tree Shows
The tree has three levels:
• Level 1 — Calm or tense? Every note you play is either in the key (calm) or outside the key (tense). This is the broadest split.
• Level 2 — How stable? On the calm (in-key) side, notes split three ways: degrees 1, 3, 5 land solidly (stable, green); 2, 4, 6 create gentle motion (less stable, amber); and 7 strains hard to resolve (unstable, orange). On the tense (outside-the-key) side, each note sits in its own branch.
• Level 3 — The specific degree. Here you find the exact role: the calm 3, the restless 7, the sharp bite of ♭2. This is where ear training lives.
Say the Path Out Loud
Play a note, then say its full path before looking at the label. For example:
"Calm → Stable → 3"
"Calm → Less Stable → 4"
"Calm → Unstable → 7"
"Tense → ♭2"
This is the mental motion of a fluent listener — they don't just hear a pitch, they instantly read its position on the map.
The Map Travels
Here's the same tree in the key of G. Notice: the structure of the map is identical. The degree numbers stay the same. Only the actual pitches shift.
This is why trained musicians can hear 3 in any key — the role is universal, the note is local.
Coming Up Next
Now that you can place every note on the map and name its role, the next lesson asks a new question: how do those roles pull on each other?
Some degrees create tension that demands resolution. Others offer rest. The next lesson — The Pull of Resolution — traces the strongest force in tonal music: the 7 that can't help but fall to 1.