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major-pentatonic notes", "reference": "folk, country and a lot of East-Asian melody" } ], "harmonize": { "B": [ "G", "Bm", "Em" ], "A": [ "Am", "D" ], "G": [ "G", "C", "Em" ], "D": [ "G", "Bm", "D" ] }, "variations": { "original": [ "B4", "A4", "G4", "D5", "A4", "B4", "D5", "A4" ], "inversion (upside down)": [ "B4", "C5", "D5", "G4", "C5", "A4", "F#4", "B4" ], "retrograde (backwards)": [ "A4", "D5", "B4", "A4", "D5", "G4", "A4", "B4" ], "sequence (one scale step higher)": [ "C5", "B4", "A4", "E5", "B4", "C5", "E5", "B4" ], "answer phrase (ends on the home note)": [ "B4", "A4", "G4", "D5", "A4", "B4", "D5", "G4" ] }, "variations_midi": { "original": [ 71, 69, 67, 74, 69, 71, 74, 69 ], "inversion (upside down)": [ 71, 72, 74, 67, 72, 69, 66, 71 ], "retrograde (backwards)": [ 69, 74, 71, 69, 74, 67, 69, 71 ], "sequence (one scale step higher)": [ 72, 71, 69, 76, 71, 72, 76, 71 ], "answer phrase (ends on the home note)": [ 71, 69, 67, 74, 69, 71, 74, 67 ] }, "check": { "notes": [ { "note": "B", "strength": 0.35, "rank": 6 }, { "note": "A", "strength": 0.47, "rank": 5 }, { "note": "G", "strength": 1.0, "rank": 1 }, { "note": "D", "strength": 0.85, "rank": 2 } ], "weak_notes": [], "order_beats_shuffles_pct": 100, "verdict": "All the notes you typed clearly sound in the recording. The order fits the audio better than shuffled versions — it looks right." } }, "references": { "progressions": [ { "progression": "I–V–vi–IV (the 'four chords' of pop)", "match": "same loop", "examples": [ "“Let It Be” — The Beatles", "“No Woman, No Cry” — Bob Marley", "“With or Without You” — U2", "“Zombie” — The Cranberries (as vi–IV–I–V)" ], "your_chords": [ "G", "D", "Em", "C" ] } ], "mode": null, "groove": "the standard rock/pop backbeat — the same skeleton as “Billie Jean” (Michael Jackson)", "melody": [] }, "gaps": { "degrees": [ { "degree": "1", "semitones": 0, "note": "G", "strength": 1.0, "harmony": 0.244, "melody": 0.125, "colour": false }, { "degree": "2", "semitones": 2, "note": "A", "strength": 0.47, "harmony": 0.0, "melody": 0.375, "colour": false }, { "degree": "3", "semitones": 4, "note": "B", "strength": 0.35, "harmony": 0.0, "melody": 0.25, "colour": true }, { "degree": "4", "semitones": 5, "note": "C", "strength": 0.65, "harmony": 0.39, "melody": 0.0, "colour": false }, { "degree": "5", "semitones": 7, "note": "D", "strength": 0.85, "harmony": 0.243, "melody": 0.25, "colour": false }, { "degree": "6", "semitones": 9, "note": "E", "strength": 0.7, "harmony": 0.123, "melody": 0.0, "colour": false }, { "degree": "7", "semitones": 11, "note": "F#", "strength": 0.18, "harmony": 0.0, "melody": 0.0, "colour": false } ], "melody_source": "typed", "gaps": [ { "id": "colour", "area": "harmony", "title": "The key's colour note", "have": "a major key, whose colour note is B (degree 3)", "missing": "B is barely heard (strength 0.35 against a typical 0.65), so the major sound hardly comes through", "evidence": { "strength": 0.35, "typical": 0.65 }, "idea": "Let B be heard: hold it on a strong beat in the melody, or use a chord that contains it (G, Bm, Em)." }, { "id": "melody_degrees", "area": "melody", "title": "Scale notes the melody doesn't use", "have": "the typed melody uses 4 of the 7 scale notes", "missing": "it never touches 4 (C), 6 (E), 7 (F#)", "evidence": { "missing": [ "4", "6", "7" ], "source": "typed" }, "idea": "Bring in C, E: as a passing note between two you already use, or as a held note that resolves by step (4 falls to 3, 7 rises to 1)." }, { "id": "harmony_degrees", "area": "harmony", "title": "Chords the key offers, unused", "have": "chords built on 1, 4, 5, 6", "missing": "anything on 2 (A), 3 (B), 7 (F#)", "evidence": { "used": [ "1", "4", "5", "6" ], "unused": [ "2", "3", "7" ] }, "idea": "Try Am or Bm in place of a repeat of one of your chords." }, { "id": "mood", "area": "arrangement", "title": "Mood contrast", "have": "every section feels uplifting, energetic (excited corner)", "missing": "a section in another mood: calm or tense", "evidence": { "visited": [ "excited" ], "levers": { "mode": "Ionian (major)", "minor_chords_pct": 13, "brightness_hz": 1528, "tempo_bpm": 100.0, "notes_per_sec": 4.2, "energy": 6, "valence": 66 } }, "idea": "For a calm section: less energy, bright but gentle: fewer notes per second, softer and warmer, held major chords." } ] }, "ideas": [ { "area": "harmony", "idea": "Let B be heard: hold it on a strong beat in the melody, or use a chord that contains it (G, Bm, Em).", "gap": "colour" }, { "area": "melody", "idea": "Bring in C, E: as a passing note between two you already use, or as a held note that resolves by step (4 falls to 3, 7 rises to 1).", "gap": "melody_degrees" }, { "area": "harmony", "idea": "Try Am or Bm in place of a repeat of one of your chords.", "gap": "harmony_degrees" }, { "area": "arrangement", "idea": "For a calm section: less energy, bright but gentle: fewer notes per second, softer and warmer, held major chords.", "gap": "mood" }, { "area": "melody/harmony", "idea": "Plain major, so the strongest colour is the leading tone (F#) → G at phrase ends, or a V (D) → I cadence to land sections." }, { "area": "bass", "idea": "The bass mostly plays chord roots. Try approach notes: on the last 8th before each chord change, play a note a half-step above or below the next root. It pulls the ear into the new chord." }, { "area": "harmony", "idea": "Borrow from G minor: try a minor iv — Cm, or a bVI — Eb." }, { "area": "harmony", "idea": "The track never visits the ii chord (Am), even though it fits the scale. That makes it a fresh place to go for a bridge or a new section." }, { "area": "structure", "idea": "Smooth key-change targets (or the next song in a set): E minor (relative), D major and C major (Camelot neighbours). For a dramatic final-chorus lift, jump up a whole step to A major." }, { "area": "remix", "idea": "Same chords, new feel: try a half-time groove (drums feel like ~50 BPM) for a heavier, spacious section." }, { "area": "arrangement", "idea": "The quietest stretch is around 0:57. That's a natural spot for a solo instrument, a field recording, or a new melodic idea." }, { "area": "drums", "idea": "The groove runs without obvious fills. Mark the section changes (0:09) with a one-bar fill or a crash on the downbeat." }, { "area": "drums", "idea": "Classic backbeat (snare on 2 and 4). For contrast, play one section half-time — snare only on 3 — so the return to the backbeat lifts." }, { "area": "drums", "idea": "The kick stays on the main beats. Add one push — a kick on the 'a' of 2 or the '&' of 3 — for more bounce without changing the feel." }, { "area": "rhythm", "idea": "The groove sits mostly on the beat. Try anticipating chord changes by an 8th note, or add a syncopated percussion layer (shaker/rim) to add swing." } ], "guitar": { "capo": 0, "open_share_pct": 100, "shapes": [ { "sounds": "C", "shape": "C", "fingering": "x32010" }, { "sounds": "G", "shape": "G", "fingering": "320003" }, { "sounds": "D", "shape": "D", "fingering": "xx0232" }, { "sounds": "Em", "shape": "Em", "fingering": "022000" } ] }, "producer": { "dance": false, "pump": { "depth_db": 0.0, "measured_db": 16.8, "fall_beats": 0.67, "rise_beats": 0.08, "shape": [ -0.0, -0.1, -0.5, -0.7, -0.9, -1.2, -1.5, -1.8, -2.0, -2.3, -2.5, -2.8, -3.1, -3.3, -3.6, -3.9, -4.1, -4.4, -4.7, -4.9, -6.5, -15.6, -16.8, -5.8 ], "kind": null }, "dj": { "bpm_low": 94, "bpm_high": 106 }, "kick": [ "backbeat (snare on 2 and 4)" ], "widths": null, "low_end_wide": false, "plr_db": 17.1 }, "analyzer_version": "438e2586", "comparison": { "references": [ "A song I admire (generated).wav" ], "each": [ { "reference": "A song I admire (generated).wav", "rows": [ { "aspect": "Tempo", "yours": "100 BPM", "theirs": "118 BPM" }, { "aspect": "Key", "yours": "G major (9B)", "theirs": "G major (9B)" }, { "aspect": "Mode", "yours": "Ionian (major)", "theirs": "Ionian (major)" }, { "aspect": "Time signature", "yours": "4/4", "theirs": "4/4" }, { "aspect": "Length", "yours": "1:19", "theirs": "1:23" }, { "aspect": "Sections", "yours": "A B", "theirs": "A" }, { "aspect": "First reaches full energy", "yours": "0:00", "theirs": "0:00" }, { "aspect": "Energy · mood", "yours": "6/10 · warm, upbeat", "theirs": "6/10 · uplifting, energetic" }, { "aspect": "Off-beat hits", "yours": "0%", "theirs": "0%" }, { "aspect": "Drums · bass", "yours": "yes · yes", "theirs": "yes · yes" }, { "aspect": "Drum pattern", "yours": "backbeat (snare on 2 and 4), steady hi-hat/cymbal pulse", "theirs": "backbeat (snare on 2 and 4), steady hi-hat/cymbal pulse" }, { "aspect": "Sidechain pump", "yours": "none", "theirs": "none" }, { "aspect": "A chord change every", "yours": "4.0 beats", "theirs": "4.0 beats" }, { "aspect": "Loudness", "yours": "-19.0 LUFS", "theirs": "-19.1 LUFS" }, { "aspect": "Peak-to-loudness (punch)", "yours": "17.1 dB", "theirs": "17.8 dB" }, { "aspect": "Loudness range", "yours": "1.3 LU", "theirs": "1.5 LU" }, { "aspect": "Brightness", "yours": "1528 Hz", "theirs": "1746 Hz" } ], "ideas": [ { "area": "tempo", "idea": "Theirs moves about 18% faster: 118 BPM against your 100. Try yours faster, around 118 BPM as you count it, and see whether the feel you're after is partly its pace.", "key": "tempo_faster" }, { "area": "sound", "idea": "Theirs puts 5 dB less energy into the low-mid (250–2k) range than yours.", "key": "band_less_low-mid (250–2k)" } ] } ], "shared": [], "curves": [ { "file": "A song I admire (generated).wav", "duration_sec": 83.4, "measures": { "Tempo": [ 118.0, " BPM" ], "Energy": [ 6, "/10" ], "Off-beat hits": [ 0, "%" ], "Chord change every": [ 4.0, " beats" ], "Loudness": [ -19.1, " LUFS" ], "Punch (PLR)": [ 17.8, " dB" ], "Loudness range": [ 1.5, " LU" ], "Brightness": [ 1746, " Hz" ], "Sidechain pump": [ 0.0, " dB" ] }, "sound": { "energy_line": [ 0.904, 0.789, 0.677, 0.612, 0.882, 0.77, 0.64, 0.674, 0.85, 0.738, 0.616, 0.757, 0.825, 0.716, 0.589, 0.828, 0.795, 0.685, 0.561, 0.905, 0.788, 0.685, 0.604, 0.886, 0.772, 0.642, 0.657, 0.859, 0.746, 0.622, 0.741, 0.83, 0.72, 0.595, 0.813, 0.804, 0.691, 0.566, 0.888, 0.783, 0.684, 0.598, 0.894, 0.781, 0.652, 0.639, 0.864, 0.752, 0.626, 0.727, 0.838, 0.727, 0.602, 0.793, 0.804, 0.695, 0.573, 0.874, 0.786, 0.688, 0.591, 0.899, 0.785, 0.659, 0.624, 0.872, 0.76, 0.633, 0.709, 0.84, 0.734, 0.616, 0.737, 0.838, 0.735, 0.616, 0.748, 0.834, 0.733, 0.613, 0.754, 0.834, 0.73, 0.61, 0.754, 0.827, 0.725, 0.611, 0.77, 0.828, 0.727, 0.607, 0.771, 0.823, 0.72, 0.605, 0.787, 0.824, 0.721, 0.604, 0.788, 0.816, 0.714, 0.597, 0.791, 0.816, 0.717, 0.598, 0.807, 0.813, 0.712, 0.594, 0.811, 0.813, 0.708, 0.594, 0.824, 0.805, 0.705, 0.59, 0.828, 0.807, 0.704, 0.585, 0.828, 0.803, 0.703, 0.586, 0.847, 0.803, 0.7, 0.581, 0.846, 0.794, 0.693, 0.581, 0.863, 0.796, 0.695, 0.577, 0.865, 0.792, 0.69, 0.571, 0.873, 0.792, 0.69, 0.574, 0.882, 0.784, 0.683, 0.569, 0.885, 0.785, 0.683, 0.569, 0.0, 0.0, 0.0, 0.0 ], "octave_db": { "31.5": -13.3, "63": -4.4, "125": -6.1, "250": -6.9, "500": -14.8, "1000": -20.6, "2000": -19.5, "4000": -15.8, "8000": -12.7 } } } ], "close": [ "key & harmony", "arrangement & energy" ], "different": [ { "area": "tempo & groove", "references": 1 }, { "area": "sound & mix", "references": 1 } ] }, "midi": [ { "file": "My_pop_song_generated__bass_transcription.mid", "label": "bass, note by note (32 notes at their real times)", "chords": [] }, { "file": "My_pop_song_generated__bass_from_sheet.mid", "label": "bass, from the sheet music (on the beat grid, 33 bars, bar 1 = 0:00 in the recording)", "chords": [] }, { "file": "My_pop_song_generated__detected_loop_1.mid", "label": "detected loop 1", "chords": [ "G", "D", "Em", "C" ] }, { "file": "My_pop_song_generated__loop_1_variation_relative_sub.mid", "label": "loop 1 variation relative sub", "chords": [ "Em", "D", "Em", "C" ] }, { "file": "My_pop_song_generated__melody_original.mid", "label": "melody — original", "chords": [ "B4", "A4", "G4", "D5", "A4", "B4", "D5", "A4" ] }, { "file": "My_pop_song_generated__melody_inversion_upside_down.mid", "label": "melody — inversion (upside down)", "chords": [ "B4", "C5", "D5", "G4", "C5", "A4", "F#4", "B4" ] }, { "file": "My_pop_song_generated__melody_retrograde_backwards.mid", "label": "melody — retrograde (backwards)", "chords": [ "A4", "D5", "B4", "A4", "D5", "G4", "A4", "B4" ] }, { "file": "My_pop_song_generated__melody_sequence_one_scale_step_higher.mid", "label": "melody — sequence (one scale step higher)", "chords": [ "C5", "B4", "A4", "E5", "B4", "C5", "E5", "B4" ] }, { "file": "My_pop_song_generated__melody_answer_phrase_ends_on_the_home_note.mid", "label": "melody — answer phrase (ends on the home note)", "chords": [ "B4", "A4", "G4", "D5", "A4", "B4", "D5", "G4" ] } ], "sheets": [ { "file": "My_pop_song_generated__bass.musicxml", "label": "bass sheet music (MusicXML: open in MuseScore, Sibelius, Dorico or a DAW to edit and play)" }, { "file": "My_pop_song_generated__bass.html", "label": "bass sheet music, engraved (1 page(s); open in a browser, print to PDF)" } ] }, { "file": "A song I admire (generated).wav", "duration_sec": 83.4, "duration": "1:23", "tuning_cents": 1, "tuning_spread_cents": [ 2, 1, 2, 1 ], "tempo_bpm": 118.0, "tempo_approximate": false, "meter": { "beats_per_bar": 4, "label": "4/4", "confidence": "detected", "scores": { "3": 0.01, "4": 3.22, "5": 0.22, "7": 0.17 }, "downbeat_frame": 89 }, "key": "G major", "key_index": 7, "camelot": "9B", "key_confidence": 0.83, "runner_up_key": "C major", "key_sections": [ { "start": "0:00", "end": "1:23", "key": "G major" } ], "time_in_key": { "G major": { "seconds": 83.4, "percent": 100 } }, "key_changes": 0, "mode": "Ionian (major)", "mode_confidence": "medium", "mode_runner_up": "Mixolydian", "color_note": "B", "scale_notes": [ "G", "A", "B", "C", "D", "E", "F#" ], "drone_pct": 25, "drone": false, "third_mix": false, "thirds": "Bb / B", "note_strength": { "G": 1.0, "Ab": 0.09, "A": 0.18, "Bb": 0.04, "B": 0.29, "C": 0.8, "C#": 0.25, "D": 0.98, "Eb": 0.18, "E": 0.91, "F": 0.11, "F#": 0.23 }, "chords_used": [ { "chord": "C", "seconds": 25.4 }, { "chord": "G", "seconds": 20.3 }, { "chord": "D", "seconds": 20.3 }, { "chord": "Em", "seconds": 15.3 } ], "harmonic_rhythm_beats": 4.0, "harmonic_rhythm_sec": 2.0, "chord_timeline": [ { "time": "0:00", "start": 0.0, "chord": "Em", "roman": "vi", "with_bass": "Em", "beats": 3, "clarity": 16.95 }, { "time": "0:02", "start": 1.56, "chord": "C", "roman": "IV", "with_bass": "C", "beats": 5, "clarity": 10.92 }, { "time": "0:04", "start": 4.09, "chord": "G", "roman": "I", "with_bass": "G", "beats": 4, "clarity": 7.56 }, { "time": "0:06", "start": 6.13, "chord": "D", "roman": "V", "with_bass": "D", "beats": 4, "clarity": 8.47 }, { "time": "0:08", "start": 8.17, "chord": "Em", "roman": "vi", "with_bass": "Em", "beats": 3, "clarity": 13.72 }, { "time": "0:10", "start": 9.68, "chord": "C", "roman": "IV", "with_bass": "C", "beats": 5, "clarity": 11.1 }, { "time": "0:12", "start": 12.24, "chord": "G", "roman": "I", "with_bass": "G", "beats": 4, "clarity": 7.74 }, { "time": "0:14", "start": 14.26, "chord": "D", 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"bar1_time": 0.02 }, "bass_rhythm": { "notes": 40, "note_values": [ [ "whole notes", 98 ], [ "dotted halves", 2 ] ], "notes_per_bar": 1.0, "offbeat_pct": 2, "sixteenth_offbeat_pct": 2, "syncopated_pct": 2, "main_bar_rhythm": "x...............", "main_bar_rhythm_pct": 98, "distinct_bar_rhythms": 2, "usual_positions": "X...............", "position_pct": [ 98, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ] }, "blues_form": null, "song_form": null, "references": { "progressions": [ { "progression": "I–V–vi–IV (the 'four chords' of pop)", "match": "same loop", "examples": [ "“Let It Be” — The Beatles", "“No Woman, No Cry” — Bob Marley", "“With or Without You” — U2", "“Zombie” — The Cranberries (as vi–IV–I–V)" ], "your_chords": [ "G", "D", "Em", "C" ] } ], "mode": null, "groove": "the standard rock/pop backbeat — the same skeleton as “Billie Jean” (Michael Jackson)", "melody": [] }, "gaps": { "degrees": [ { "degree": "1", "semitones": 0, "note": "G", "strength": 1.0, "harmony": 0.244, 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through", "evidence": { "strength": 0.29, "typical": 0.8 }, "idea": "Let B be heard: hold it on a strong beat in the melody, or use a chord that contains it (G, Bm, Em)." }, { "id": "tension_notes", "area": "melody", "title": "Tension notes", "have": "a top line that's 94% chord tones", "missing": "notes outside the chord (suspensions, 9ths, passing notes) that pull and resolve", "evidence": { "chord_tone_pct": 94 }, "idea": "Delay a chord tone: hold the note from the previous chord over the change (a suspension) and let it fall by step." }, { "id": "harmony_degrees", "area": "harmony", "title": "Chords the key offers, unused", "have": "chords built on 1, 4, 5, 6", "missing": "anything on 2 (A), 3 (B), 7 (F#)", "evidence": { "used": [ "1", "4", "5", "6" ], "unused": [ "2", "3", "7" ] }, "idea": "Try Am or Bm in place of a repeat of one of your chords." }, { "id": "mood", "area": "arrangement", "title": "Mood contrast", "have": "every section feels uplifting, energetic (excited corner)", "missing": "a section in another mood: calm or tense", "evidence": { "visited": [ "excited" ], "levers": { "mode": "Ionian (major)", "minor_chords_pct": 19, "brightness_hz": 1746, "tempo_bpm": 118.0, "notes_per_sec": 3.8, "energy": 6, "valence": 68 } }, "idea": "For a calm section: less energy, bright but gentle: fewer notes per second, softer and warmer, held major chords." } ] }, "ideas": [ { "area": "harmony", "idea": "Let B be heard: hold it on a strong beat in the melody, or use a chord that contains it (G, Bm, Em).", "gap": "colour" }, { "area": "melody", "idea": "Delay a chord tone: hold the note from the previous chord over the change (a suspension) and let it fall by step.", "gap": "tension_notes" }, { "area": "harmony", "idea": "Try Am or Bm in place of a repeat of one of your chords.", "gap": "harmony_degrees" }, { "area": "arrangement", "idea": "For a calm section: less energy, bright but gentle: fewer notes per second, softer and warmer, held major chords.", "gap": "mood" }, { "area": "melody/harmony", "idea": "Plain major, so the strongest colour is the leading tone (F#) → G at phrase ends, or a V (D) → I cadence to land sections." }, { "area": "bass", "idea": "The bass mostly plays chord roots. Try approach notes: on the last 8th before each chord change, play a note a half-step above or below the next root. It pulls the ear into the new chord." }, { "area": "harmony", "idea": "Borrow from G minor: try a minor iv — Cm, or a bVI — Eb." }, { "area": "harmony", "idea": "The track never visits the ii chord (Am), even though it fits the scale. That makes it a fresh place to go for a bridge or a new section." }, { "area": "structure", "idea": "Smooth key-change targets (or the next song in a set): E minor (relative), D major and C major (Camelot neighbours). For a dramatic final-chorus lift, jump up a whole step to A major." }, { "area": "remix", "idea": "Same chords, new feel: try a half-time groove (drums feel like ~59 BPM) for a heavier, spacious section." }, { "area": "arrangement", "idea": "The quietest stretch is around 0:56. That's a natural spot for a solo instrument, a field recording, or a new melodic idea." }, { "area": "drums", "idea": "Classic backbeat (snare on 2 and 4). For contrast, play one section half-time — snare only on 3 — so the return to the backbeat lifts." }, { "area": "drums", "idea": "The kick stays on the main beats. Add one push — a kick on the 'a' of 2 or the '&' of 3 — for more bounce without changing the feel." }, { "area": "rhythm", "idea": "The groove sits mostly on the beat. Try anticipating chord changes by an 8th note, or add a syncopated percussion layer (shaker/rim) to add swing." } ], "guitar": { "capo": 0, "open_share_pct": 100, "shapes": [ { "sounds": "C", "shape": "C", "fingering": "x32010" }, { "sounds": "G", "shape": "G", "fingering": "320003" }, { "sounds": "D", "shape": "D", "fingering": "xx0232" }, { "sounds": "Em", "shape": "Em", "fingering": "022000" } ] }, "producer": { "dance": false, "pump": { "depth_db": 0.0, "measured_db": 6.7, "fall_beats": 0.67, "rise_beats": 0.04, "shape": [ -0.3, -0.1, -0.4, -0.6, -0.9, -1.0, -1.3, -1.6, -1.8, -2.1, -2.4, -2.6, -2.9, -3.2, -3.5, -3.7, -4.0, -4.3, -4.6, -4.9, -5.2, -5.6, -6.7, -6.9 ], "kind": null }, "dj": { "bpm_low": 111, "bpm_high": 125 }, "kick": [ "backbeat (snare on 2 and 4)" ], "widths": null, "low_end_wide": false, "plr_db": 17.8 }, "role": "reference", "analyzer_version": "438e2586", "heard": null } ]