Beat, key and chord analysis

Models, parameters, and sources

Beat This! final0 detects beat and downbeat times. TelkNet derives BPM, a normalized beat grid, and fixed-versus-variable-tempo warnings; OpenKeyScan3 adds global key, Camelot, and Open Key notation. ChordMini BTC is the default; switch to 2E1D or Omnizart to compare. Chord MIDI provides harmony audition, not the original performance.

Beat This! final0 + OpenKeyScan3Beat This! source (pinned)OpenKeyScan3 source and weights (pinned)ISMIR 2024 paperBeat This! paper, Table 1Beat This!ASAPPaper Table 1BallroomBeatlesCandombeFilosax

Beat This! final0 + OpenKeyScan3

Beat This! source (pinned)OpenKeyScan3 source and weights (pinned)ISMIR 2024 paper

Review BPM, beats, downbeats and key, then download analysis files for arranging or mixing.

ChordMini BTC

Analyze a song chord by chord and export the progression as MIDI plus a timestamped chord table. ChordMini BTC is the default; switch to 2E1D or Omnizart to compare. Chord MIDI provides harmony audition, not the original performance.

ChordMini BTC CL (full)ChordMini paper (2026)

Identify the chord progression with ChordMini BTC / ChordMini 2E1D / Omnizart and download chord MIDI and a timestamped chord table.
After inference, Beat This final0 writes a valid fixed tempo or beat-by-beat tempo map into the MIDI while preserving every event's position in seconds. If valid beat evidence cannot be produced, the task fails instead of delivering MIDI with the model's default tempo.

ChordMini 2E1D

ChordMini 2E1D CL (full)ChordMini paper (2026)

Identify the chord progression with ChordMini BTC / ChordMini 2E1D / Omnizart and download chord MIDI and a timestamped chord table.
After inference, Beat This final0 writes a valid fixed tempo or beat-by-beat tempo map into the MIDI while preserving every event's position in seconds. If valid beat evidence cannot be produced, the task fails instead of delivering MIDI with the model's default tempo.

Omnizart ChordV1

Omnizart source (pinned)Omnizart ChordV1 checkpoint Omnizart JOSS paper Harmony Transformer paper

Identify the chord progression with ChordMini BTC / ChordMini 2E1D / Omnizart and download chord MIDI and a timestamped chord table.
After inference, Beat This final0 writes a valid fixed tempo or beat-by-beat tempo map into the MIDI while preserving every event's position in seconds. If valid beat evidence cannot be produced, the task fails instead of delivering MIDI with the model's default tempo.

Model comparison

Model

Role

Why it is used

Output impact

Scores apply only to the cited dataset, metric and model version. Leading this table does not mean a current world record or a result from this service. Capabilities and tests can justify prioritizing models without comparable scores.

Benchmark chart: Complete chord model scores

Scores come from the cited public sources; blue rows are models available in this tool.

Beat This! published per-dataset beat scores

Beat This! paper, Table 1

The paper reports one model across different datasets, so the rows are dataset scores rather than a model leaderboard. Dataset difficulty and annotation policy differ.

Public sources checked: 2026-09-10

Dataset	Model	Beat F1 (%)	Detailed metrics
ASAP	Beat This!Paper Table 1	76.3	Downbeat F1 (%)61.2
Ballroom	Beat This!Paper Table 1	97.5	Downbeat F1 (%)95.3
Beatles	Beat This!Paper Table 1	94.5	Downbeat F1 (%)88.8
Candombe	Beat This!Paper Table 1	99.7	Downbeat F1 (%)99.7
Filosax	Beat This!Paper Table 1	99.5	Downbeat F1 (%)98.5
Groove MIDI	Beat This!Paper Table 1	93.7	Downbeat F1 (%)82.1
GuitarSet	Beat This!Paper Table 1	92.0	Downbeat F1 (%)88.1
Hainsworth	Beat This!Paper Table 1	91.9	Downbeat F1 (%)80.0
Harmonix	Beat This!Paper Table 1	95.8	Downbeat F1 (%)90.7
HJDB	Beat This!Paper Table 1	98.2	Downbeat F1 (%)96.6
JAAH	Beat This!Paper Table 1	95.1	Downbeat F1 (%)85.0
RWC Classical	Beat This!Paper Table 1	77.1	Downbeat F1 (%)66.3
RWC Jazz	Beat This!Paper Table 1	83.3	Downbeat F1 (%)80.7
RWC Pop	Beat This!Paper Table 1	96.1	Downbeat F1 (%)93.7
RWC RF	Beat This!Paper Table 1	94.5	Downbeat F1 (%)91.9
Simac	Beat This!Paper Table 1	77.9
SMC	Beat This!Paper Table 1	62.7
TapCorrect	Beat This!Paper Table 1	93.0	Downbeat F1 (%)86.4

Chords: unified local evaluation

TelkNet · 2026-09-13

Frozen 2026-09-13 evaluation: 285 inputs, 855 inferences. References exist for 208 GuitarSet and 48 SWD inputs; 29 local inputs have no independent truth and no accuracy score. All 55 groups are selectable, including solo, style, performer and reference type: performed, instructed and human. WCSR weights eligible duration; macro averages tracks; bar scores use reference bars. Expand each metric’s included/excluded duration. Omnizart raw and CSV remain separate. Results do not guarantee arbitrary-mix accuracy or zero training overlap.

Ranks are computed within each table and evaluation context, retaining ties. Change the metric to reorder; scroll horizontally for every column. Missing values are unranked, never zero.

Public sources checked: 2026-09-13

Rank by metricTest setting

Showing 4/220 rows · 20 metrics

Download complete evaluation data

Chords: unified local evaluation
Rank	Test setting	Model	root WCSR (%)	majmin WCSR (%)	triads WCSR (%)	sevenths WCSR (%)	tetrads WCSR (%)	tetrads_inv WCSR (%)	full_pitch_classes WCSR (%)	full_pitch_classes_inv WCSR (%)	root macro (%)	majmin macro (%)	triads macro (%)	sevenths macro (%)	tetrads macro (%)	tetrads_inv macro (%)	full_pitch_classes macro (%)	full_pitch_classes_inv macro (%)	Bar majmin macro (%)	Boundary F1 (±0.25 s, %)	Timeline coverage (%)	N
#1	GuitarSet 1.1.0 · comping · performed	ChordMini BTC (CL full)	81.71 Evaluation duration Included 5444.89 s; excluded 0.00 s	86.75 Evaluation duration Included 3631.10 s; excluded 1813.79 s	58.61 Evaluation duration Included 5444.89 s; excluded 0.00 s	79.80 Evaluation duration Included 3502.10 s; excluded 1942.78 s	52.05 Evaluation duration Included 5444.89 s; excluded 0.00 s	41.56 Evaluation duration Included 5444.89 s; excluded 0.00 s	52.05 Evaluation duration Included 5444.89 s; excluded 0.00 s	41.56 Evaluation duration Included 5444.89 s; excluded 0.00 s	80.74 Evaluation duration Included 5444.89 s; excluded 0.00 s	83.25 Evaluation duration Included 3631.10 s; excluded 1813.79 s	57.42 Evaluation duration Included 5444.89 s; excluded 0.00 s	74.09 Evaluation duration Included 3502.10 s; excluded 1942.78 s	50.30 Evaluation duration Included 5444.89 s; excluded 0.00 s	40.15 Evaluation duration Included 5444.89 s; excluded 0.00 s	50.30 Evaluation duration Included 5444.89 s; excluded 0.00 s	40.15 Evaluation duration Included 5444.89 s; excluded 0.00 s	86.24	69.00	99.85	178.00
#2	GuitarSet 1.1.0 · comping · performed	ChordMini 2E1D (CL full)	73.81 Evaluation duration Included 5444.89 s; excluded 0.00 s	79.60 Evaluation duration Included 3631.10 s; excluded 1813.79 s	53.33 Evaluation duration Included 5444.89 s; excluded 0.00 s	74.17 Evaluation duration Included 3502.10 s; excluded 1942.78 s	47.96 Evaluation duration Included 5444.89 s; excluded 0.00 s	39.15 Evaluation duration Included 5444.89 s; excluded 0.00 s	47.96 Evaluation duration Included 5444.89 s; excluded 0.00 s	39.15 Evaluation duration Included 5444.89 s; excluded 0.00 s	72.44 Evaluation duration Included 5444.89 s; excluded 0.00 s	75.69 Evaluation duration Included 3631.10 s; excluded 1813.79 s	52.05 Evaluation duration Included 5444.89 s; excluded 0.00 s	68.45 Evaluation duration Included 3502.10 s; excluded 1942.78 s	46.28 Evaluation duration Included 5444.89 s; excluded 0.00 s	37.79 Evaluation duration Included 5444.89 s; excluded 0.00 s	46.28 Evaluation duration Included 5444.89 s; excluded 0.00 s	37.79 Evaluation duration Included 5444.89 s; excluded 0.00 s	78.52	61.76	99.85	178.00
#3	GuitarSet 1.1.0 · comping · performed	Omnizart ChordV1 (raw)	70.68 Evaluation duration Included 5444.89 s; excluded 0.00 s	78.39 Evaluation duration Included 3631.10 s; excluded 1813.79 s	52.28 Evaluation duration Included 5444.89 s; excluded 0.00 s	59.70 Evaluation duration Included 3502.10 s; excluded 1942.78 s	38.40 Evaluation duration Included 5444.89 s; excluded 0.00 s	30.59 Evaluation duration Included 5444.89 s; excluded 0.00 s	38.40 Evaluation duration Included 5444.89 s; excluded 0.00 s	30.59 Evaluation duration Included 5444.89 s; excluded 0.00 s	69.89 Evaluation duration Included 5444.89 s; excluded 0.00 s	75.06 Evaluation duration Included 3631.10 s; excluded 1813.79 s	51.24 Evaluation duration Included 5444.89 s; excluded 0.00 s	52.34 Evaluation duration Included 3502.10 s; excluded 1942.78 s	36.49 Evaluation duration Included 5444.89 s; excluded 0.00 s	28.82 Evaluation duration Included 5444.89 s; excluded 0.00 s	36.49 Evaluation duration Included 5444.89 s; excluded 0.00 s	28.82 Evaluation duration Included 5444.89 s; excluded 0.00 s	77.73	38.65	100.00	178.00
#4	GuitarSet 1.1.0 · comping · performed	Omnizart ChordV1 (CSV)	71.03 Evaluation duration Included 5444.89 s; excluded 0.00 s	78.31 Evaluation duration Included 3631.10 s; excluded 1813.79 s	52.23 Evaluation duration Included 5444.89 s; excluded 0.00 s	59.56 Evaluation duration Included 3502.10 s; excluded 1942.78 s	38.31 Evaluation duration Included 5444.89 s; excluded 0.00 s	30.51 Evaluation duration Included 5444.89 s; excluded 0.00 s	38.31 Evaluation duration Included 5444.89 s; excluded 0.00 s	30.51 Evaluation duration Included 5444.89 s; excluded 0.00 s	70.18 Evaluation duration Included 5444.89 s; excluded 0.00 s	75.23 Evaluation duration Included 3631.10 s; excluded 1813.79 s	51.19 Evaluation duration Included 5444.89 s; excluded 0.00 s	52.50 Evaluation duration Included 3502.10 s; excluded 1942.78 s	36.41 Evaluation duration Included 5444.89 s; excluded 0.00 s	28.75 Evaluation duration Included 5444.89 s; excluded 0.00 s	36.41 Evaluation duration Included 5444.89 s; excluded 0.00 s	28.75 Evaluation duration Included 5444.89 s; excluded 0.00 s	77.62	58.89	89.77	178.00

Chords: local chord-quality results

TelkNet · chord quality · 2026-09-13

Ranks are computed within each table and evaluation context, retaining ties. Change the metric to reorder; scroll horizontally for every column. Missing values are unranked, never zero.

Public sources checked: 2026-09-13

Rank by metricTest setting

Showing 4/220 rows · 20 metrics

Download complete evaluation data

Chords: local chord-quality results
Rank	Test setting	Model	Explicit interval set (%)	11 (%)	7 (%)	9 (%)	aug (%)	dim (%)	dim7 (%)	hdim7 (%)	maj (%)	maj6 (%)	maj7 (%)	maj9 (%)	min (%)	min11 (%)	min6 (%)	min7 (%)	min9 (%)	minmaj7 (%)	sus2 (%)	sus4 (%)
#1	GuitarSet 1.1.0 · comping · performed	ChordMini BTC (CL full)	0.00 Evaluation duration Included 627.82 s; excluded 0.00 s	0.00 Evaluation duration Included 9.64 s; excluded 0.00 s	38.70 Evaluation duration Included 604.00 s; excluded 0.00 s	16.48 Evaluation duration Included 118.59 s; excluded 0.00 s	0.00 Evaluation duration Included 16.14 s; excluded 0.00 s	—	0.00 Evaluation duration Included 3.85 s; excluded 0.00 s	19.04 Evaluation duration Included 137.90 s; excluded 0.00 s	85.47 Evaluation duration Included 2083.65 s; excluded 0.00 s	0.00 Evaluation duration Included 160.33 s; excluded 0.00 s	36.92 Evaluation duration Included 413.79 s; excluded 0.00 s	0.00 Evaluation duration Included 21.50 s; excluded 0.00 s	80.85 Evaluation duration Included 636.31 s; excluded 0.00 s	44.82 Evaluation duration Included 4.36 s; excluded 0.00 s	0.00 Evaluation duration Included 20.66 s; excluded 0.00 s	25.34 Evaluation duration Included 355.33 s; excluded 0.00 s	2.60 Evaluation duration Included 52.26 s; excluded 0.00 s	0.00 Evaluation duration Included 2.02 s; excluded 0.00 s	7.98 Evaluation duration Included 117.55 s; excluded 0.00 s	5.80 Evaluation duration Included 59.21 s; excluded 0.00 s
#2	GuitarSet 1.1.0 · comping · performed	ChordMini 2E1D (CL full)	0.00 Evaluation duration Included 627.82 s; excluded 0.00 s	0.00 Evaluation duration Included 9.64 s; excluded 0.00 s	35.61 Evaluation duration Included 604.00 s; excluded 0.00 s	12.13 Evaluation duration Included 118.59 s; excluded 0.00 s	0.00 Evaluation duration Included 16.14 s; excluded 0.00 s	—	0.00 Evaluation duration Included 3.85 s; excluded 0.00 s	0.00 Evaluation duration Included 137.90 s; excluded 0.00 s	79.75 Evaluation duration Included 2083.65 s; excluded 0.00 s	0.00 Evaluation duration Included 160.33 s; excluded 0.00 s	35.32 Evaluation duration Included 413.79 s; excluded 0.00 s	0.00 Evaluation duration Included 21.50 s; excluded 0.00 s	75.79 Evaluation duration Included 636.31 s; excluded 0.00 s	40.56 Evaluation duration Included 4.36 s; excluded 0.00 s	0.00 Evaluation duration Included 20.66 s; excluded 0.00 s	21.49 Evaluation duration Included 355.33 s; excluded 0.00 s	0.00 Evaluation duration Included 52.26 s; excluded 0.00 s	0.00 Evaluation duration Included 2.02 s; excluded 0.00 s	8.53 Evaluation duration Included 117.55 s; excluded 0.00 s	5.80 Evaluation duration Included 59.21 s; excluded 0.00 s
#3	GuitarSet 1.1.0 · comping · performed	Omnizart ChordV1 (raw)	0.00 Evaluation duration Included 627.82 s; excluded 0.00 s	0.00 Evaluation duration Included 9.64 s; excluded 0.00 s	0.00 Evaluation duration Included 604.00 s; excluded 0.00 s	0.00 Evaluation duration Included 118.59 s; excluded 0.00 s	0.00 Evaluation duration Included 16.14 s; excluded 0.00 s	—	0.00 Evaluation duration Included 3.85 s; excluded 0.00 s	0.00 Evaluation duration Included 137.90 s; excluded 0.00 s	79.62 Evaluation duration Included 2083.65 s; excluded 0.00 s	0.00 Evaluation duration Included 160.33 s; excluded 0.00 s	0.00 Evaluation duration Included 413.79 s; excluded 0.00 s	0.00 Evaluation duration Included 21.50 s; excluded 0.00 s	67.85 Evaluation duration Included 636.31 s; excluded 0.00 s	0.00 Evaluation duration Included 4.36 s; excluded 0.00 s	0.00 Evaluation duration Included 20.66 s; excluded 0.00 s	0.00 Evaluation duration Included 355.33 s; excluded 0.00 s	0.00 Evaluation duration Included 52.26 s; excluded 0.00 s	0.00 Evaluation duration Included 2.02 s; excluded 0.00 s	0.00 Evaluation duration Included 117.55 s; excluded 0.00 s	0.00 Evaluation duration Included 59.21 s; excluded 0.00 s
#4	GuitarSet 1.1.0 · comping · performed	Omnizart ChordV1 (CSV)	0.00 Evaluation duration Included 627.82 s; excluded 0.00 s	0.00 Evaluation duration Included 9.64 s; excluded 0.00 s	0.00 Evaluation duration Included 604.00 s; excluded 0.00 s	0.00 Evaluation duration Included 118.59 s; excluded 0.00 s	0.00 Evaluation duration Included 16.14 s; excluded 0.00 s	—	0.00 Evaluation duration Included 3.85 s; excluded 0.00 s	0.00 Evaluation duration Included 137.90 s; excluded 0.00 s	79.55 Evaluation duration Included 2083.65 s; excluded 0.00 s	0.00 Evaluation duration Included 160.33 s; excluded 0.00 s	0.00 Evaluation duration Included 413.79 s; excluded 0.00 s	0.00 Evaluation duration Included 21.50 s; excluded 0.00 s	67.29 Evaluation duration Included 636.31 s; excluded 0.00 s	0.00 Evaluation duration Included 4.36 s; excluded 0.00 s	0.00 Evaluation duration Included 20.66 s; excluded 0.00 s	0.00 Evaluation duration Included 355.33 s; excluded 0.00 s	0.00 Evaluation duration Included 52.26 s; excluded 0.00 s	0.00 Evaluation duration Included 2.02 s; excluded 0.00 s	0.00 Evaluation duration Included 117.55 s; excluded 0.00 s	0.00 Evaluation duration Included 59.21 s; excluded 0.00 s

ChordMini: continual learning

2602.19778 · S4.T2

ChordMini uses a fixed 420/60/120-song train/validation/test split. SL, 50% CL, full CL and reimplemented prior methods are retained; ± is standard deviation. Paper seed means differ from this site’s fixed CL full checkpoints.

Ranks are computed within each table and evaluation context, retaining ties. Change the metric to reorder; scroll horizontally for every column. Missing values are unranked, never zero.

Public sources checked: 2026-09-13

± indicates standard deviation.

Rank by metric

Showing 8/8 rows · 10 metrics

ChordMini: continual learning
Rank	Test setting	Model	root (%)	thirds (%)	triads (%)	sevenths (%)	tetrads (%)	majmin (%)	mirex (%)	seg (%)	WCSR (%)	ACQA (%)
#1	120 songs · GT test	BTC (CL) (full)	83.03 ± 0.04	80.17 ± 0.11	78.33 ± 0.12	69.38 ± 0.10	67.00 ± 0.13	80.24 ± 0.10	80.16 ± 0.05	81.71 ± 0.12	71.60 ± 0.10	39.50 ± 0.40
#2	120 songs · GT test	2E1D (CL) (full)	81.55 ± 0.05	78.52 ± 0.12	76.85 ± 0.13	68.19 ± 0.12	65.49 ± 0.15	78.98 ± 0.11	78.52 ± 0.06	80.73 ± 0.14	71.90 ± 0.20	36.10 ± 0.40
#3	120 songs · GT test	BTC (CL) (50%)	82.14 ± 0.06	78.58 ± 0.17	76.67 ± 0.18	66.77 ± 0.15	64.28 ± 0.20	78.62 ± 0.15	78.87 ± 0.08	81.17 ± 0.18	68.70 ± 0.20	37.10 ± 0.60
#4	120 songs · GT test	BTC (SL) (3.03M)	81.52 ± 1.20	78.00 ± 1.00	76.12 ± 0.50	65.93 ± 1.70	63.44 ± 0.90	78.11 ± 1.20	77.79 ± 0.90	79.38 ± 1.10	68.60 ± 1.10	29.00 ± 1.30
#5	120 songs · GT test	2E1D (CL) (50%)	81.02 ± 0.08	77.54 ± 0.18	75.76 ± 0.20	66.39 ± 0.18	63.68 ± 0.23	77.93 ± 0.17	77.57 ± 0.09	80.23 ± 0.21	70.40 ± 0.30	34.20 ± 0.60
#6	120 songs · GT test	2E1D (SL) (2.2M)	79.39 ± 1.40	76.14 ± 1.20	74.53 ± 0.60	64.53 ± 1.90	61.67 ± 1.00	76.89 ± 1.40	76.24 ± 0.70	78.50 ± 1.20	68.70 ± 1.00	24.40 ± 1.50
#7	120 songs · GT test	Li et al.†	78.05	73.56	70.71	61.11	56.84	74.64	74.26	—	—	—
—	120 songs · GT test	Bortolozzo et al.†	—	—	—	—	—	—	—	—	46.80	24.50

ChordMini: pseudo-label training

2602.19778 · S3.T1

All training configurations, recognition and segmentation metrics are retained. Root–MIREX and segmentation use ground truth. Teacher Acc/Prec/Rec/F1 measure only teacher agreement, not true chord accuracy.

Ranks are computed within each table and evaluation context, retaining ties. Change the metric to reorder; scroll horizontally for every column. Missing values are unranked, never zero.

Public sources checked: 2026-09-13

± indicates standard deviation.

Rank by metric

Showing 11/11 rows · 14 metrics

ChordMini: pseudo-label training
Rank	Test setting	Model	root (%)	thirds (%)	triads (%)	sevenths (%)	tetrads (%)	majmin (%)	mirex (%)	over (%)	under (%)	seg (%)	Teacher Acc (%)	Teacher Prec (%)	Teacher Rec (%)	Teacher F1 (%)
#1	120 songs · GT / teacher	BTC · Pre-trained weights	81.89	78.49	76.85	66.29	63.72	79.00	78.65	82.16	90.33	80.85	—	—	—	—
#2	120 songs · GT / teacher	BTC (3.03M) · All (FMA+M+D)	81.54 ± 0.90	77.86 ± 0.70	76.08 ± 0.80	66.29 ± 1.10	63.54 ± 1.00	78.29 ± 0.70	77.84 ± 0.90	80.97	90.15	80.76	89.14	62.54	63.89	59.34
#3	120 songs · GT / teacher	BTC (3.03M) · All + KD (alpha=0.3)	81.23 ± 1.00	77.75 ± 0.80	75.94 ± 0.90	66.00 ± 1.00	63.22 ± 1.10	78.15 ± 0.80	77.82 ± 1.00	80.81	90.25	80.60	89.47	63.21	64.05	60.12
#4	120 songs · GT / teacher	BTC (3.03M) · DALI (long-form)	81.01 ± 1.00	77.24 ± 0.90	75.35 ± 1.00	65.46 ± 1.20	62.59 ± 1.10	77.66 ± 0.90	77.14 ± 1.00	79.50	90.60	79.51	85.88	49.23	50.37	47.32
#5	120 songs · GT / teacher	2E1D (2.2M) · All (FMA+M+D)	80.37 ± 1.20	76.63 ± 1.10	74.91 ± 1.20	64.37 ± 1.40	61.50 ± 1.30	77.29 ± 1.10	76.35 ± 1.20	84.34	85.63	80.15	80.15	57.01	45.20	47.49
#6	120 songs · GT / teacher	2E1D (2.2M) · All + KD (alpha=0.3)	80.17 ± 1.00	76.36 ± 1.00	74.68 ± 1.00	63.93 ± 1.30	61.06 ± 1.40	77.09 ± 1.00	76.08 ± 1.00	84.23	85.27	79.69	81.23	58.14	46.33	48.62
#7	120 songs · GT / teacher	BTC (3.03M) · MAESTRO+DALI	80.65 ± 1.10	76.37 ± 1.00	74.61 ± 1.20	64.19 ± 1.00	61.35 ± 1.30	76.93 ± 0.90	76.69 ± 1.00	77.42	90.67	77.66	88.01	58.84	64.29	59.16
#8	120 songs · GT / teacher	2E1D (2.2M) · MAESTRO+DALI	79.50 ± 1.00	75.80 ± 1.00	74.11 ± 1.10	63.18 ± 1.30	60.28 ± 1.20	76.53 ± 1.00	75.50 ± 1.10	83.14	84.85	78.53	79.44	52.23	41.95	44.50
#9	120 songs · GT / teacher	BTC (3.03M) · FMA (short-form)	78.85 ± 1.20	74.76 ± 1.00	73.12 ± 1.10	62.88 ± 1.30	60.09 ± 1.40	75.37 ± 1.00	75.07 ± 1.10	80.92	87.57	79.44	61.12	36.53	24.11	26.37
#10	120 songs · GT / teacher	2E1D (2.2M) · FMA (short-form)	77.28 ± 1.30	73.70 ± 1.20	72.15 ± 1.10	61.78 ± 1.40	58.94 ± 1.50	74.49 ± 1.20	73.68 ± 1.30	83.55	83.96	78.03	57.27	34.43	20.29	23.51
#11	120 songs · GT / teacher	2E1D (2.2M) · DALI (long-form)	74.32 ± 1.10	65.53 ± 1.30	63.73 ± 1.40	52.68 ± 1.50	50.27 ± 1.40	65.91 ± 1.30	65.37 ± 1.40	77.09	85.92	74.00	78.25	48.06	37.41	39.52

ChordMini: chord-quality results

2602.19778 · S5.T3

All ten chord classes remain, including rare classes and zeros. Source frame counts: N 14.7k, Maj 137k, Min 36.4k, Dom7 32.6k, Maj7 11.4k, Min7 25.3k, Dim 540, Dim7 212, Aug 517, Sus 5.6k.

Ranks are computed within each table and evaluation context, retaining ties. Change the metric to reorder; scroll horizontally for every column. Missing values are unranked, never zero.

Public sources checked: 2026-09-13

Rank by metric

Showing 7/7 rows · 10 metrics

ChordMini: chord-quality results
Rank	Test setting	Model	ACQA N (%)	ACQA Maj (%)	ACQA Min (%)	ACQA Dom7 (%)	ACQA Maj7 (%)	ACQA Min7 (%)	ACQA Dim (%)	ACQA Dim7 (%)	ACQA Aug (%)	ACQA Sus (%)
#1	120 songs · chord quality	2E1D (SL)	69.00	91.70	62.10	23.90	25.20	44.40	3.50	0.00	0.00	8.00
#2	120 songs · chord quality	2E1D (CL) (50%)	69.20	90.90	63.00	33.30	29.50	49.00	12.70	46.70	5.20	16.60
#3	120 songs · chord quality	2E1D (CL) (full)	69.20	90.00	68.90	39.40	35.30	51.90	14.80	46.40	8.40	18.80
#4	120 songs · chord quality	BTC (SL)	53.50	88.70	63.10	36.70	28.20	52.80	23.30	0.00	5.90	22.90
#5	120 songs · chord quality	BTC (CL) (full)	71.20	87.10	65.60	51.60	42.30	55.70	23.50	45.60	18.50	25.50
#6	120 songs · chord quality	BTC (CL) (50%)	71.20	84.50	61.20	50.20	42.10	51.60	18.30	47.40	14.80	22.30
#7	120 songs · chord quality	Bortolozzo et al.†	—	55.50	54.40	51.00	12.00	47.50	30.40	43.30	—	—

ChordMini: misaligned-label stress test

2602.19778 · S5.T4

KD stress experiment with misaligned labels: all alpha configurations and eight metrics are retained. Do not rank these results against the clean-label main test.

Ranks are computed within each table and evaluation context, retaining ties. Change the metric to reorder; scroll horizontally for every column. Missing values are unranked, never zero.

Public sources checked: 2026-09-13

Rank by metric

Showing 8/8 rows · 8 metrics

ChordMini: misaligned-label stress test
Rank	Test setting	Model	root (%)	thirds (%)	triads (%)	sevenths (%)	tetrads (%)	majmin (%)	mirex (%)	seg (%)
#1	120 songs · misaligned GT	BTC · alpha=0.3	77.34	73.95	72.44	62.97	60.25	74.60	74.29	79.61
#2	120 songs · misaligned GT	BTC · alpha=0.4	76.95	72.88	71.30	61.30	58.57	73.59	73.18	78.98
#3	120 songs · misaligned GT	2E1D · alpha=0.5	74.21	71.25	69.78	61.20	58.35	72.09	71.54	76.84
#4	120 songs · misaligned GT	BTC · alpha=0.1	73.88	70.86	69.43	60.91	58.25	71.52	70.96	78.59
#5	120 songs · misaligned GT	BTC · alpha=0	71.06	68.05	66.73	58.11	55.66	68.69	68.20	77.05
#6	120 songs · misaligned GT	2E1D · alpha=0.3	66.05	63.89	62.79	55.78	53.39	64.70	63.87	73.32
#7	120 songs · misaligned GT	2E1D · alpha=0.1	55.85	54.16	53.41	47.68	45.78	54.88	54.07	67.70
#8	120 songs · misaligned GT	2E1D · alpha=0	52.47	50.70	49.88	42.52	41.00	51.12	50.99	66.72

Harmony Transformer McGill Billboard scores (paper Table 1)

Harmony Transformer paper, Table 1

This checkpoint has no reproducible public score table. See the linked release material for details.

Public sources checked: 2026-09-10

Paper architecture	Model	WCSR (%)	Detailed metrics
McGill Billboard	Harmony Transformer (HT)Paper Table 1	82.68	Segmentation F1 (%) ↑57.15

Paper and benchmark notes

Beat this! Accurate beat tracking without DBN postprocessing

ISMIR - 2024

Paper

Genre-Agnostic Key Classification With Convolutional Neural Networks

ISMIR - 2018

Paper Deployed implementation

Enhancing Automatic Chord Recognition via Pseudo-Labeling and Knowledge Distillation

arXiv - 2026

Paper ChordMini source and checkpoints

Omnizart: A General Toolbox for Automatic Music Transcription

JOSS - 2021

Paper ChordV1 checkpoint

Harmony Transformer: Incorporating Chord Segmentation into Harmony Recognition

ISMIR - 2019

This checkpoint has no reproducible public score table. See the linked release material for details.

Paper Original source Omnizart ChordV1 adapter (pinned)

Official / repositories

Beat This! source (pinned)OpenKeyScan3 source and weights (pinned)ChordMini BTC CL (full)ChordMini 2E1D CL (full)Omnizart source (pinned)Omnizart ChordV1 checkpoint

Papers / technical notes

ISMIR 2024 paper ChordMini paper (2026)Omnizart JOSS paper Harmony Transformer paper

Beat, key and chord analysis

Models, parameters, and sources

Beat This! final0 + OpenKeyScan3

ChordMini BTC

ChordMini 2E1D

Omnizart ChordV1

Model comparison

Benchmark chart: Complete chord model scores

Beat This! published per-dataset beat scores

Chords: unified local evaluation

Chords: local chord-quality results

ChordMini: continual learning

ChordMini: pseudo-label training

ChordMini: chord-quality results

ChordMini: misaligned-label stress test

Harmony Transformer McGill Billboard scores (paper Table 1)

Paper and benchmark notes

Beat this! Accurate beat tracking without DBN postprocessing

Genre-Agnostic Key Classification With Convolutional Neural Networks

Enhancing Automatic Chord Recognition via Pseudo-Labeling and Knowledge Distillation

Omnizart: A General Toolbox for Automatic Music Transcription

Harmony Transformer: Incorporating Chord Segmentation into Harmony Recognition

Official / repositories

Papers / technical notes

Workflow

Related use-case guides

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