mt3-guitar-pilot

T5X/Orbax checkpoints from the MT3 guitar-transcription fine-tuning pilot (see MODAL_TRAINING_SETUP_PLAN.md / MT3_guitar_transcription_plan.md in the source repo). Not transformers-loadable -- these are raw T5X checkpoint directories, restorable with this fork's mt3 package.

• checkpoint_0/: the official Magenta multi-instrument MT3 checkpoint (step 1,000,000), unmodified. Re-downloadable from Google's public bucket; included here for a self-contained repo.
• checkpoint_1000500/: the pilot fine-tune's checkpoint after 500 steps beyond the pretrained restore, on the 12-example guitar_pilot corpus. Engineering pilot only, not a quality result -- see the source repo's PROJECT_LOG.md (2026-08-04 entries) for training curves and caveats.