BACH

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Freedom report

One barScore 5.2

Runs widely0 of 6 device platforms
DocumentedPlans, terms and facts published

BACH is ranked #118 of 124 in AI music generators on Freedom251. It runs on Self-hosted.

Compared on AI music generators

Vocal generation: Yes

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The record

Product: BACH describes itself as a human-editable, bar-level symbolic song generator.
Generation flow: The project describes a flow in which an LLM writes lyrics, a Transformer emits an ABC score, and renderers produce music.
Model size: The README describes BACH as a 1B-parameter model.
Architecture: The architecture uses a BACH-1B decoder-only Transformer to produce ABC scores, with Dual-NTP and Chain-of-Score components.
Score structure: The README says the model predicts vocal and accompaniment patches jointly and uses section tags for long-form coherence.
Rendering tools: The described pipeline converts ABC to MIDI and names FluidSynth and VOCALOID in its stereo-mix stage.
Preview contents: The preview repository contains inference code and an example song, along with architecture figures.
Release limitation: The README says the preview is incomplete and not a CPU-ready generation pipeline; required codec modules and assets are not included.
Security guidance: The README recommends trusted model assets and says inference uses PyTorch's restricted weights-only checkpoint loader rather than automatically loading legacy pickled model objects.
Evaluation dependency: The README says pitch extraction requires librosa, RMVPE, and its model checkpoint.
Paper: The project identifies its associated paper as accepted to ICASSP 2026.
Maker affiliation: The maker's GitHub profile says Tongxi Wang is affiliated with the School of Future Technology at Southeast University.
Model: The project describes BACH-1B as a decoder-only Transformer with 1 billion parameters.
Control: Its Dual-NTP component jointly predicts vocal and accompaniment patches at each step.

Where it ranks on Freedom251

Best AI Music Generators in 2026#118 of 124

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Sources

github.com/WtxwNs/BACH· checked 5 Oct 2026
github.com/WtxwNs· checked 5 Oct 2026