The upstream project targets pitched instruments generally and also publishes other_v1_5, vocal, and vocal_harmony checkpoints. This TelkNet tool currently exposes bass_v2 and guitar_v1_5. Velocity prediction is a separate postprocessor; instrument classification and multi-track output remain experimental.
Input
Supports inputs in formats such as mp3 / wav / flac / ogg / m4a / aac / aif / aiff / mp4 / mov / mkv
Supported formats
Output
MIDI
Use case
Edit notes, instrumentation and performance details.
Choose by input and output needs, then comparable tests, published evaluations and capabilities. Missing scores do not imply lower quality; more parameters or a newer release do not prove superiority. This is a suggested usage order, not an overall leaderboard.
Cost, time, formats and parameters depend on the selected model.
AvailableSpotify Basic Pitch transcribes polyphonic performances from nearly any instrument, including voice, into MIDI and optional note-event CSV with pitch bends. It works best on one instrument at a time.
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.
Scores come from the cited public sources; blue rows are models available in this tool.
Values come from the linked public source. Row labels identify the test set or checkpoint; models without a matching result are omitted.
Public sources checked: 2026-09-10
| Rank | Test setting | Model | COn F1 (%) ↑ |
|---|---|---|---|
| #1 | In-house real-recording evaluation | other_v1_5Official changelog | 77.01 |
| #2 | In-house real-recording evaluation | otherOfficial changelog | 73.18 |
Values come from the linked public source. Row labels identify the test set or checkpoint; models without a matching result are omitted.
Public sources checked: 2026-09-10
| Rank | Test setting | Model | Top-1 accuracy (%) ↑ |
|---|---|---|---|
| #1 | Held-out RWC-I | Instrument refinement modelOfficial changelog | 74.5 |
| #2 | Held-out RWC-I | Base instrument classifierOfficial changelog | 71.3 |
Scores come from the linked base checkpoint, not a new measurement of the model running here.
Public sources checked: 2026-09-10
| Dataset | Model | F_no-offset | Detailed metrics |
|---|---|---|---|
| Molina | 0.52 | Frame accuracy ↑0.63F_with-offset ↑0.35 | |
| GuitarSet | 0.79 | Frame accuracy ↑0.70F_with-offset ↑0.56 | |
| MAESTRO | 0.71 | Frame accuracy ↑0.38F_with-offset ↑0.11 | |
| Slakh | 0.42 | Frame accuracy ↑0.44F_with-offset ↑0.21 | |
| PHENICX | 0.49 | Frame accuracy ↑0.53F_with-offset ↑0.35 |
Official technical guide - 2026
ICASSP - 2022
Spotify Basic Pitch transcribes polyphonic performances from nearly any instrument, including voice, into MIDI and optional note-event CSV with pitch bends. It works best on one instrument at a time.
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