Music Runtime

This page covers the native music-generation path exposed through mere.run music generate.

Public surface

• mere.run music generate

Model family

• music-acestep

Typical workflow

swift run mere.run music generate \
  "upbeat electronic groove" \
  --output ./track.wav

Runtime entrypoints

CLI

• Sources/MereRunCLI/Commands/MusicGenerateCommand.swift

Runtime

• Sources/MereRunCore/ACEStep/ACEStepPipeline.swift
• Sources/MereRunCore/ACEStep/ACEStepPipeline+Prompting.swift
• Sources/MereRunCore/ACEStep/ACEStepPipeline+Generation.swift

Reading order

The ACEStep runtime now follows a clean phase split:

1. ACEStepPipeline.swift for the public pipeline and orchestration
2. ACEStepPipeline+Prompting.swift for prompt preparation and conditioning
3. ACEStepPipeline+Generation.swift for the generation path itself

That makes it much easier to follow than a single pipeline monolith.

Contributor notes

• this is a native Swift/MLX path, not a Python bridge
• model resolution and storage still follow the same canonical public rules as the rest of the repo