{ "$schema": "https://cantivy.com/dados/v1/openapi.json", "endpoint": "https://cantivy.com/dados/v1/chords.json", "description": "Digitações de acorde para violão e guitarra de seis cordas em afinação padrão (EADGBE): doze fundamentais × nove qualidades, com casas, dedos, pestana e as notas que a posição soa.", "instrument": "violão / guitarra, 6 cordas, afinação padrão", "tuning": [ { "string_number": 6, "note": "E2", "name_pt": "Mi", "midi": 40, "hz": 82.41 }, { "string_number": 5, "note": "A2", "name_pt": "Lá", "midi": 45, "hz": 110 }, { "string_number": 4, "note": "D3", "name_pt": "Ré", "midi": 50, "hz": 146.83 }, { "string_number": 3, "note": "G3", "name_pt": "Sol", "midi": 55, "hz": 196 }, { "string_number": 2, "note": "B3", "name_pt": "Si", "midi": 59, "hz": 246.94 }, { "string_number": 1, "note": "E4", "name_pt": "Mi", "midi": 64, "hz": 329.63 } ], "encoding": { "frets": "Seis posições, da sexta corda (mi grave) para a primeira (mi agudo). 0 = corda solta, -1 = corda abafada, n ≥ 1 = casa pressionada, em valor absoluto.", "fingers": "Dedos da mão esquerda, 1 = indicador … 4 = mínimo. null onde não há dedo.", "barre": "Pestana: `fret` é a casa, `from` e `to` são números de corda (6 = mi grave, 1 = mi agudo).", "string_number": "Como um violonista fala: corda 1 é a mais aguda, corda 6 a mais grave." }, "qualities": [ { "id": "major", "suffix": "", "intervals": [ "1", "3", "5" ], "semitones": [ 0, 4, 7 ] }, { "id": "minor", "suffix": "m", "intervals": [ "1", "b3", "5" ], "semitones": [ 0, 3, 7 ] }, { "id": "7", "suffix": "7", "intervals": [ "1", "3", "5", "b7" ], "semitones": [ 0, 4, 7, 10 ] }, { "id": "m7", "suffix": "m7", "intervals": [ "1", "b3", "5", "b7" ], "semitones": [ 0, 3, 7, 10 ] }, { "id": "maj7", "suffix": "maj7", "intervals": [ "1", "3", "5", "7" ], "semitones": [ 0, 4, 7, 11 ] }, { "id": "dim", "suffix": "dim", "intervals": [ "1", "b3", "b5" ], "semitones": [ 0, 3, 6 ] }, { "id": "aug", "suffix": "aug", "intervals": [ "1", "3", "#5" ], "semitones": [ 0, 4, 8 ] }, { "id": "sus2", "suffix": "sus2", "intervals": [ "1", "2", "5" ], "semitones": [ 0, 2, 7 ] }, { "id": "sus4", "suffix": "sus4", "intervals": [ "1", "4", "5" ], "semitones": [ 0, 5, 7 ] } ], "count": 108, "provenance": "As 108 digitações são as posições que a ferramenta de acordes do site desenha e toca. As notas que cada acorde soa são calculadas a partir das casas e da afinação padrão, não escritas ao lado — é por isso que a lista de notas e o desenho não podem discordar.", "caveats": { "voicing": "Cada acorde traz UMA digitação comum — a que um professor mostra primeiro —, não a única possível. Não é uma afirmação de que outras posições estejam erradas.", "absolute_frets": "As casas em `frets` são absolutas, não relativas à pestana. Em B maior, `barre.fret` é 2 e a sexta corda é -1 (abafada): somar a pestana às casas conta duas vezes." }, "licence": { "name": "CC BY 4.0", "url": "https://creativecommons.org/licenses/by/4.0/", "attribution": "Cantivy — https://cantivy.com", "note": "Livre para reutilizar, inclusive comercialmente, com um link de volta para o endpoint ou para a página de onde o dado veio." }, "human_page": "https://cantivy.com/ferramentas/acordes/", "chords": [ { "root": "C", "quality": "major", "symbol": "C", "intervals": [ "1", "3", "5" ], "pitch_classes": [ "C", "E", "G" ], "frets": [ -1, 3, 2, 0, 1, 0 ], "fingers": [ null, 3, 2, null, 1, null ], "barre": null, "open_strings": 2, "muted_strings": 1, "lowest_note": "C3", "sounding_notes": [ { "string_number": 5, "fret": 3, "note": "C3", "name_pt": "Dó", "midi": 48, "hz": 130.81 }, { "string_number": 4, "fret": 2, "note": "E3", "name_pt": "Mi", "midi": 52, "hz": 164.81 }, { "string_number": 3, "fret": 0, "note": "G3", "name_pt": "Sol", "midi": 55, "hz": 196 }, { "string_number": 2, "fret": 1, "note": "C4", "name_pt": "Dó", "midi": 60, "hz": 261.63 }, { "string_number": 1, "fret": 0, "note": "E4", "name_pt": "Mi", "midi": 64, "hz": 329.63 } ] }, { "root": "C", "quality": "minor", "symbol": "Cm", "intervals": [ "1", "b3", "5" ], "pitch_classes": [ "C", "D#", "G" ], "frets": [ -1, 3, 5, 5, 4, 3 ], "fingers": [ null, 3, null, null, 2, 1 ], "barre": { "fret": 3, "from": 5, "to": 1 }, "open_strings": 0, "muted_strings": 1, "lowest_note": "C3", "sounding_notes": [ { "string_number": 5, "fret": 3, "note": "C3", "name_pt": "Dó", "midi": 48, "hz": 130.81 }, { "string_number": 4, "fret": 5, "note": "G3", "name_pt": "Sol", "midi": 55, "hz": 196 }, { "string_number": 3, "fret": 5, "note": "C4", "name_pt": "Dó", "midi": 60, "hz": 261.63 }, { "string_number": 2, "fret": 4, "note": "D#4", "name_pt": "Ré#", "midi": 63, "hz": 311.13 }, { "string_number": 1, "fret": 3, "note": "G4", "name_pt": "Sol", "midi": 67, "hz": 392 } ] }, { "root": "C", "quality": "7", "symbol": "C7", "intervals": [ "1", "3", "5", "b7" ], "pitch_classes": [ "C", "E", "G", "A#" ], "frets": [ -1, 3, 2, 3, 1, 0 ], "fingers": [ null, 3, 2, 4, 1, null ], "barre": null, "open_strings": 1, "muted_strings": 1, "lowest_note": "C3", "sounding_notes": [ { "string_number": 5, "fret": 3, "note": "C3", "name_pt": "Dó", "midi": 48, "hz": 130.81 }, { "string_number": 4, "fret": 2, "note": "E3", "name_pt": "Mi", "midi": 52, "hz": 164.81 }, { "string_number": 3, "fret": 3, "note": "A#3", "name_pt": "Lá#", "midi": 58, "hz": 233.08 }, { "string_number": 2, "fret": 1, "note": "C4", "name_pt": "Dó", "midi": 60, "hz": 261.63 }, { "string_number": 1, "fret": 0, "note": "E4", "name_pt": "Mi", "midi": 64, "hz": 329.63 } ] }, { "root": "C", "quality": "m7", "symbol": "Cm7", "intervals": [ "1", "b3", "5", "b7" ], "pitch_classes": [ "C", "D#", "G", "A#" ], "frets": [ -1, 3, 5, 3, 4, 3 ], "fingers": [ null, 2, 4, 1, 3, 1 ], "barre": { "fret": 3, "from": 5, "to": 1 }, "open_strings": 0, "muted_strings": 1, "lowest_note": "C3", "sounding_notes": [ { "string_number": 5, "fret": 3, "note": "C3", "name_pt": "Dó", "midi": 48, "hz": 130.81 }, { "string_number": 4, "fret": 5, "note": "G3", "name_pt": "Sol", "midi": 55, "hz": 196 }, { "string_number": 3, "fret": 3, "note": "A#3", "name_pt": "Lá#", "midi": 58, "hz": 233.08 }, { "string_number": 2, "fret": 4, "note": "D#4", "name_pt": "Ré#", "midi": 63, "hz": 311.13 }, { "string_number": 1, "fret": 3, "note": "G4", "name_pt": "Sol", "midi": 67, "hz": 392 } ] }, { "root": "C", "quality": "maj7", "symbol": "Cmaj7", "intervals": [ "1", "3", "5", "7" ], "pitch_classes": [ "C", "E", "G", "B" ], "frets": [ -1, 3, 2, 0, 0, 0 ], "fingers": [ null, 3, 2, null, null, null ], "barre": null, "open_strings": 3, "muted_strings": 1, "lowest_note": "C3", "sounding_notes": [ { "string_number": 5, "fret": 3, "note": "C3", "name_pt": "Dó", "midi": 48, "hz": 130.81 }, { "string_number": 4, "fret": 2, "note": "E3", "name_pt": "Mi", "midi": 52, "hz": 164.81 }, { "string_number": 3, "fret": 0, "note": "G3", "name_pt": "Sol", "midi": 55, "hz": 196 }, { "string_number": 2, "fret": 0, "note": "B3", "name_pt": "Si", "midi": 59, "hz": 246.94 }, { "string_number": 1, "fret": 0, "note": "E4", "name_pt": "Mi", "midi": 64, "hz": 329.63 } ] }, { "root": "C", "quality": "dim", "symbol": "Cdim", "intervals": [ "1", "b3", "b5" ], "pitch_classes": [ "C", "D#", "F#" ], "frets": [ -1, 3, 4, 5, 4, -1 ], "fingers": [ null, 1, 2, 4, 3, null ], "barre": null, "open_strings": 0, "muted_strings": 2, "lowest_note": "C3", "sounding_notes": [ { "string_number": 5, "fret": 3, "note": "C3", "name_pt": "Dó", "midi": 48, "hz": 130.81 }, { "string_number": 4, "fret": 4, "note": "F#3", "name_pt": "Fá#", "midi": 54, "hz": 185 }, { "string_number": 3, "fret": 5, "note": "C4", "name_pt": "Dó", "midi": 60, "hz": 261.63 }, { "string_number": 2, "fret": 4, "note": "D#4", "name_pt": "Ré#", "midi": 63, "hz": 311.13 } ] }, { "root": "C", "quality": "aug", "symbol": "Caug", "intervals": [ "1", "3", "#5" ], "pitch_classes": [ "C", "E", "G#" ], "frets": [ -1, 3, 2, 1, 1, 0 ], "fingers": [ null, 4, 3, 1, 2, null ], "barre": null, "open_strings": 1, "muted_strings": 1, "lowest_note": "C3", "sounding_notes": [ { "string_number": 5, "fret": 3, "note": "C3", "name_pt": "Dó", "midi": 48, "hz": 130.81 }, { "string_number": 4, "fret": 2, "note": "E3", "name_pt": "Mi", "midi": 52, "hz": 164.81 }, { "string_number": 3, "fret": 1, "note": "G#3", "name_pt": "Sol#", "midi": 56, "hz": 207.65 }, { "string_number": 2, "fret": 1, "note": "C4", "name_pt": "Dó", "midi": 60, "hz": 261.63 }, { "string_number": 1, "fret": 0, "note": "E4", "name_pt": "Mi", "midi": 64, "hz": 329.63 } ] }, { "root": "C", "quality": "sus2", "symbol": "Csus2", "intervals": [ "1", "2", "5" ], "pitch_classes": [ "C", "D", "G" ], "frets": [ -1, 3, 0, 0, 1, 3 ], "fingers": [ null, 2, null, null, 1, 3 ], "barre": null, "open_strings": 2, "muted_strings": 1, "lowest_note": "C3", "sounding_notes": [ { "string_number": 5, "fret": 3, "note": "C3", "name_pt": "Dó", "midi": 48, "hz": 130.81 }, { "string_number": 4, "fret": 0, "note": "D3", "name_pt": "Ré", "midi": 50, "hz": 146.83 }, { "string_number": 3, "fret": 0, "note": "G3", "name_pt": "Sol", "midi": 55, "hz": 196 }, { "string_number": 2, "fret": 1, "note": "C4", "name_pt": "Dó", "midi": 60, "hz": 261.63 }, { "string_number": 1, "fret": 3, "note": "G4", "name_pt": "Sol", "midi": 67, "hz": 392 } ] }, { "root": "C", "quality": "sus4", "symbol": "Csus4", "intervals": [ "1", "4", "5" ], "pitch_classes": [ "C", "F", "G" ], "frets": [ -1, 3, 3, 0, 1, 1 ], "fingers": [ null, 3, 4, null, 1, 2 ], "barre": null, "open_strings": 1, "muted_strings": 1, "lowest_note": "C3", "sounding_notes": [ { "string_number": 5, "fret": 3, "note": "C3", "name_pt": "Dó", "midi": 48, "hz": 130.81 }, { "string_number": 4, "fret": 3, "note": "F3", "name_pt": "Fá", "midi": 53, "hz": 174.61 }, { "string_number": 3, "fret": 0, "note": "G3", "name_pt": "Sol", "midi": 55, "hz": 196 }, { "string_number": 2, "fret": 1, "note": "C4", "name_pt": "Dó", "midi": 60, "hz": 261.63 }, { "string_number": 1, "fret": 1, "note": "F4", "name_pt": "Fá", "midi": 65, "hz": 349.23 } ] }, { "root": "C#", "quality": "major", "symbol": "C#", "intervals": [ "1", "3", "5" ], "pitch_classes": [ "C#", "F", "G#" ], "frets": [ -1, 4, 3, 1, 2, 1 ], "fingers": [ null, 4, 3, 1, 2, 1 ], "barre": { "fret": 1, "from": 5, "to": 1 }, "open_strings": 0, "muted_strings": 1, "lowest_note": "C#3", "sounding_notes": [ { "string_number": 5, "fret": 4, "note": "C#3", "name_pt": "Dó#", "midi": 49, "hz": 138.59 }, { "string_number": 4, "fret": 3, "note": "F3", "name_pt": "Fá", "midi": 53, "hz": 174.61 }, { "string_number": 3, "fret": 1, "note": "G#3", "name_pt": "Sol#", "midi": 56, "hz": 207.65 }, { "string_number": 2, "fret": 2, "note": "C#4", "name_pt": "Dó#", "midi": 61, "hz": 277.18 }, { "string_number": 1, "fret": 1, "note": "F4", "name_pt": "Fá", "midi": 65, "hz": 349.23 } ] }, { "root": "C#", "quality": "minor", "symbol": "C#m", "intervals": [ "1", "b3", "5" ], "pitch_classes": [ "C#", "E", "G#" ], "frets": [ -1, 4, 6, 6, 5, 4 ], "fingers": [ null, 3, null, null, 2, 1 ], "barre": { "fret": 4, "from": 5, "to": 1 }, "open_strings": 0, "muted_strings": 1, "lowest_note": "C#3", "sounding_notes": [ { "string_number": 5, "fret": 4, "note": "C#3", "name_pt": "Dó#", "midi": 49, "hz": 138.59 }, { "string_number": 4, "fret": 6, "note": "G#3", "name_pt": "Sol#", "midi": 56, "hz": 207.65 }, { "string_number": 3, "fret": 6, "note": "C#4", "name_pt": "Dó#", "midi": 61, "hz": 277.18 }, { "string_number": 2, "fret": 5, "note": "E4", "name_pt": "Mi", "midi": 64, "hz": 329.63 }, { "string_number": 1, "fret": 4, "note": "G#4", "name_pt": "Sol#", "midi": 68, "hz": 415.3 } ] }, { "root": "C#", "quality": "7", "symbol": "C#7", "intervals": [ "1", "3", "5", "b7" ], "pitch_classes": [ "C#", "F", "G#", "B" ], "frets": [ -1, 4, 3, 4, 2, 1 ], "fingers": [ null, 3, 2, 4, 1, 1 ], "barre": { "fret": 1, "from": 2, "to": 1 }, "open_strings": 0, "muted_strings": 1, "lowest_note": "C#3", "sounding_notes": [ { "string_number": 5, "fret": 4, "note": "C#3", "name_pt": "Dó#", "midi": 49, "hz": 138.59 }, { "string_number": 4, "fret": 3, "note": "F3", "name_pt": "Fá", "midi": 53, "hz": 174.61 }, { "string_number": 3, "fret": 4, "note": "B3", "name_pt": "Si", "midi": 59, "hz": 246.94 }, { "string_number": 2, "fret": 2, "note": "C#4", "name_pt": "Dó#", "midi": 61, "hz": 277.18 }, { "string_number": 1, "fret": 1, "note": "F4", "name_pt": "Fá", "midi": 65, "hz": 349.23 } ] }, { "root": "C#", "quality": "m7", "symbol": "C#m7", "intervals": [ "1", "b3", "5", "b7" ], "pitch_classes": [ "C#", "E", "G#", "B" ], "frets": [ -1, 4, 6, 4, 5, 4 ], "fingers": [ null, 2, 4, 1, 3, 1 ], "barre": { "fret": 4, "from": 5, "to": 1 }, "open_strings": 0, "muted_strings": 1, "lowest_note": "C#3", "sounding_notes": [ { "string_number": 5, "fret": 4, "note": "C#3", "name_pt": "Dó#", "midi": 49, "hz": 138.59 }, { "string_number": 4, "fret": 6, "note": "G#3", "name_pt": "Sol#", "midi": 56, "hz": 207.65 }, { "string_number": 3, "fret": 4, "note": "B3", "name_pt": "Si", "midi": 59, "hz": 246.94 }, { "string_number": 2, "fret": 5, "note": "E4", "name_pt": "Mi", "midi": 64, "hz": 329.63 }, { "string_number": 1, "fret": 4, "note": "G#4", "name_pt": "Sol#", "midi": 68, "hz": 415.3 } ] }, { "root": "C#", "quality": "maj7", "symbol": "C#maj7", "intervals": [ "1", "3", "5", "7" ], "pitch_classes": [ "C#", "F", "G#", "C" ], "frets": [ -1, 4, 3, 1, 1, 1 ], "fingers": [ null, 4, 3, 1, 1, 1 ], "barre": { "fret": 1, "from": 4, "to": 1 }, "open_strings": 0, "muted_strings": 1, "lowest_note": "C#3", "sounding_notes": [ { "string_number": 5, "fret": 4, "note": "C#3", "name_pt": "Dó#", "midi": 49, "hz": 138.59 }, { "string_number": 4, "fret": 3, "note": "F3", "name_pt": "Fá", "midi": 53, "hz": 174.61 }, { "string_number": 3, "fret": 1, "note": "G#3", "name_pt": "Sol#", "midi": 56, "hz": 207.65 }, { "string_number": 2, "fret": 1, "note": "C4", "name_pt": "Dó", "midi": 60, "hz": 261.63 }, { "string_number": 1, "fret": 1, "note": "F4", "name_pt": "Fá", "midi": 65, "hz": 349.23 } ] }, { "root": "C#", "quality": "dim", "symbol": "C#dim", "intervals": [ "1", "b3", "b5" ], "pitch_classes": [ "C#", "E", "G" ], "frets": [ -1, 4, 5, 6, 5, -1 ], "fingers": [ null, 1, 2, 4, 3, null ], "barre": null, "open_strings": 0, "muted_strings": 2, "lowest_note": "C#3", "sounding_notes": [ { "string_number": 5, "fret": 4, "note": "C#3", "name_pt": "Dó#", "midi": 49, "hz": 138.59 }, { "string_number": 4, "fret": 5, "note": "G3", "name_pt": "Sol", "midi": 55, "hz": 196 }, { "string_number": 3, "fret": 6, "note": "C#4", "name_pt": "Dó#", "midi": 61, "hz": 277.18 }, { "string_number": 2, "fret": 5, "note": "E4", "name_pt": "Mi", "midi": 64, "hz": 329.63 } ] }, { "root": "C#", "quality": "aug", "symbol": "C#aug", "intervals": [ "1", "3", "#5" ], "pitch_classes": [ "C#", "F", "A" ], "frets": [ -1, 4, 3, 2, 2, 1 ], "fingers": [ null, 4, 3, 2, 1, 1 ], "barre": null, "open_strings": 0, "muted_strings": 1, "lowest_note": "C#3", "sounding_notes": [ { "string_number": 5, "fret": 4, "note": "C#3", "name_pt": "Dó#", "midi": 49, "hz": 138.59 }, { "string_number": 4, "fret": 3, "note": "F3", "name_pt": "Fá", "midi": 53, "hz": 174.61 }, { "string_number": 3, "fret": 2, "note": "A3", "name_pt": "Lá", "midi": 57, "hz": 220 }, { "string_number": 2, "fret": 2, "note": "C#4", "name_pt": "Dó#", "midi": 61, "hz": 277.18 }, { "string_number": 1, "fret": 1, "note": "F4", "name_pt": "Fá", "midi": 65, "hz": 349.23 } ] }, { "root": "C#", "quality": "sus2", "symbol": "C#sus2", "intervals": [ "1", "2", "5" ], "pitch_classes": [ "C#", "D#", "G#" ], "frets": [ -1, 4, 1, 1, 2, 4 ], "fingers": [ null, 3, 1, 1, 2, 4 ], "barre": { "fret": 1, "from": 4, "to": 3 }, "open_strings": 0, "muted_strings": 1, "lowest_note": "C#3", "sounding_notes": [ { "string_number": 5, "fret": 4, "note": "C#3", 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