Advanced Features

These features require explicit flags — they never run unless you ask for them. Each one handles a specific analysis or correction task that the automatic pipeline doesn't cover.

Overview

Feature	Flag	What it does
Stem Quality Judgment	--choose-stems	Compares Suno's stems vs AI-generated ones using RMS energy, spectral centroid, and cross-correlation
Grid Anchor / Bar-1 Detection	--choose-grid-anchor	Handles sparse intros, pickups, weak first kicks, and FX-only openings
Section Detection	--detect-sections	Uses MFCC recurrence matrix and checkerboard novelty kernel for segmentation
Harmonic MIDI Repair	--repair-midi	Detects key, flags wrong notes, resolves dissonant chord clusters
MIDI Requantization	--requantize-midi	Groove-aware quantization with strict, light, swing, and triplet modes
Separation Strategy	--reseparate, --separate-missing	Demucs vs UVR, targeted re-separation

The --apply flag

All advanced features support preview mode by default — they analyze and print results without modifying files. Pass --apply to write changes to the output directory.

# Preview: prints analysis only
suno-to-ableton repair-midi /path/to/my-song

# Apply: writes corrected MIDI files
suno-to-ableton repair-midi /path/to/my-song --apply

Using with the pipeline

Advanced features can be enabled during a full processing run:

suno-to-ableton process /path/to/my-song \
  --detect-sections \
  --repair-midi \
  --apply

Or run standalone after processing:

suno-to-ableton detect-sections /path/to/my-song
suno-to-ableton repair-midi /path/to/my-song --apply