Music Theory
music-theory.x402tookit.com
Key signature (sharps or flats), circle-of-fifths neighbours, relative and parallel keys for any major or minor key.
- Category
- Service
- Networks
- BaseSolanaPolygonArbitrum
- Starting price
- $0.02
- Paid calls, 30 days
- 16
Paid endpoints
8 endpoints, sorted by usage. Prices are per request.
| Endpoint | Price | Network | Facilitator | Calls / 30d |
|---|---|---|---|---|
GET/chord-name Name a chord from its notes (C E G Bb, A C E G): best name, inversion and alternative names; first note is the bass. | $0.02 | Base | Coinbase CDP | 2 |
GET/freq-note Frequency in Hz to the nearest note, MIDI number and offset in cents; adjustable A4 reference; tuner-style result. | $0.02 | Base | Coinbase CDP | 2 |
GET/interval Interval between two notes (quality, number, semitones) or the note a given interval above or below a note. | $0.02 | Base | Coinbase CDP | 2 |
GET/key-signature Key signature (sharps or flats), circle-of-fifths neighbours, relative and parallel keys for any major or minor key. | $0.02 | Base | Coinbase CDP | 2 |
GET/note-freq Note name (C#4, Bb3) or MIDI number to MIDI, frequency in Hz and wavelength, with adjustable A4 reference pitch. | $0.02 | Base | Coinbase CDP | 2 |
GET/roman-numerals Roman numeral analysis of a chord progression in a key: numerals, inversions, borrowed chords, secondary dominants. | $0.02 | Base | Coinbase CDP | 2 |
GET/tempo BPM to milliseconds for note values, dotted and triplet delay times; or average tap intervals into a steady BPM. | $0.02 | Base | Coinbase CDP | 2 |
GET/transpose Transpose a chord progression by semitones or from one key to another, with spelling that fits the target key. | $0.02 | Base | Coinbase CDP | 2 |
Is this your project? Suggest an edit.