Scale Explorer
Root
Scale
How to use
- Pick a root note from the 12-button grid.
- Pick a scale type — major, minor, modes, pentatonics, or exotic.
- Switch between piano and guitar diagrams.
- Hit Ascending to play the scale up, Descending to play it down, or I-IV-V-I to hear a basic cadence.
- Click any chord chip below to hear that diatonic chord in context.
How to read a scale diagram
Each highlighted note belongs to the scale. The root (the first note of the scale) is shown in a slightly darker shade — it's the home note that the rest of the scale revolves around. On the guitar fretboard, every position where a scale tone falls is marked, so you can pick the most comfortable spot to play in.
The formula row shows the interval pattern — W for whole step (2 semitones), H for half step (1 semitone). The major scale is W-W-H-W-W-W-H. Every mode of the major scale is the same pattern starting from a different note, which is why Dorian, Phrygian, Lydian and the rest all use the same seven notes as the parent major scale, just starting somewhere different.
The diatonic chord row at the bottom shows the seven chords you can build from the scale's notes — the I, ii, iii, IV, V, vi, and vii° in classical notation. These are the chords that "belong to the key." Click any chord to hear it.
FAQs
What's the difference between major and minor scales?
The biggest audible difference is the third note. A major scale has a major third (4 semitones up from the root) — that's the "happy" sound. A minor scale lowers it to a minor third (3 semitones), giving the "sad" or pensive sound. The sixth and seventh degrees also typically change. Beyond that, scales just feel different because of how those interval patterns repeat.
What are modes?
Modes are scales built by starting from each different note of the major scale. C major starting on C is Ionian (the basic major scale). Starting on D is Dorian. Starting on E is Phrygian. Same notes, different starting point, different "flavor" — Lydian sounds bright and floaty, Phrygian sounds dark and Spanish, and so on.
When would I use the harmonic minor scale?
The harmonic minor scale raises the seventh degree of the natural minor scale by a half-step, creating that distinctive "Middle Eastern" or classical sound between the sixth and seventh notes. It's used in flamenco, jazz, neo-classical metal, and any time you want a strong V→i resolution in a minor key.
Why do pentatonic scales only have five notes?
"Penta" means five. Removing two notes from the major or minor scale (the half-steps, usually) leaves a five-note scale that almost never produces dissonant intervals. That's why the pentatonic scale is the go-to for blues, rock, and country soloing — it sounds good over a wide range of chords.
What are diatonic chords?
"Diatonic" just means "of the key." Diatonic chords are the chords you can build using only the notes already in the scale. In a major scale you get a major chord on the I, ii (minor), iii (minor), IV (major), V (major), vi (minor), and vii° (diminished). These are the chords that sound "in key" — the building blocks of most Western music.