A scale finder by notes checks the whole set
Type a comma- or space-separated note set to see every major or natural-minor scale that contains it. The result reports compatible scales rather than guessing a tonal center from one note, so an incomplete collection can correctly return several candidates.
The circle is navigable rather than decorative
Each click exposes the information normally split across rings: major key, relative minor, signature, diatonic triads, and both adjacent keys.
Neighbors represent one signature step
Moving clockwise adds a sharp or removes a flat; moving counterclockwise adds a flat or removes a sharp. The result names both neighbors so modulation distance is visible as a relationship, not memorized as a poster.
Relative minor shares the signature but not the tonal center
The inner minor name reuses the same signature. The page does not claim that matching accidentals alone proves whether a passage is major or minor.
Questions
These answers cover key signatures and the displayed chord row.
Why are F-sharp and G-flat not both separate buttons?
They are enharmonic major keys sharing sounding pitches; the compact circle chooses one practical label at that position.
What are the listed chords?
They are diatonic triads built on the seven degrees of the selected major scale.
Does adjacency guarantee a good modulation?
No. It shows signature proximity; musical context still determines the effect.
Sources behind the method
The tool combines published music-theory definitions with formulas exposed directly in its result.
Calculations and microphone analysis run locally in this browser.