# Quickeys

> A quick, free online piano for finding notes, chords and scales. Play it with a mouse, touch or computer keyboard; search any chord or scale to see and hear it; play notes to get the chord named. 72 keys (C2–B7), recorded piano, A4 = 440 Hz.

Every page below is static HTML with the full content. Note names use sharps or the most common flat spelling (C, C#, D, Eb, E, F, F#, G, Ab, A, Bb, B).

## Main pages

- [Online piano](https://quickeys.app/): interactive keyboard with chord/scale search and chord recognition. Deep link a chord or scale with `https://quickeys.app/?q=<query>`, e.g. `/?q=Am7` or `/?q=D%20dorian%20scale`.
- [Piano chords chart](https://quickeys.app/chords): 300 chords (all 12 roots × 25 types).
- [Piano scales](https://quickeys.app/scales): 144 scales (all 12 roots × 12 types).
- [Note frequency chart](https://quickeys.app/frequency-chart): frequency in Hz of every note from C2 to B7.

## URL patterns

- Chord: `https://quickeys.app/chords/{root}-{type}`, root in c, c-sharp, d, e-flat, e, f, f-sharp, g, a-flat, a, b-flat, b; type in major, minor, 7, major-7, minor-7, diminished, augmented, sus2, sus4, 6, minor-6, half-diminished-7, diminished-7, minor-major-7, 7-sus4, augmented-7, add9, minor-add9, 9, major-9, minor-9, 6-9, 11, minor-11, 13. Example: https://quickeys.app/chords/a-minor-7
- Scale: `https://quickeys.app/scales/{root}-{type}`, type in major, natural-minor, harmonic-minor, melodic-minor, major-pentatonic, minor-pentatonic, blues, dorian, phrygian, lydian, mixolydian, locrian. Example: https://quickeys.app/scales/d-dorian

## Data

- [All chords as JSON](https://quickeys.app/api/chords.json): symbol, name, notes, intervals, MIDI numbers, URL.
- [All scales as JSON](https://quickeys.app/api/scales.json)
- [All notes as JSON](https://quickeys.app/api/notes.json): note, solfège name, MIDI number, frequency.
- [Full reference as text](https://quickeys.app/llms-full.txt)

## Optional

- [Privacy policy](https://quickeys.app/privacy)