Music FaderNets

UPDATE 4.11.2020: Updated arousal_transfer.ipynb for ease of usage. Added VGMIDI pre-processed dataset in release section.

This repository contains code for the paper "Music FaderNets: Controllable Music Generation Based On High-Level Features via Low-Level Feature Modelling" by Hao Hao Tan and Dorien Herremans.

Representations of high-level musical qualities are not easy to learn with supervised learning techniques, either because of the insufficiency of labels, or the subjectiveness (and hence large variance) in human-annotated labels. We propose to use low-level features as "bridges" to between the music and the high level features. Hence, the model consists of:

• Faders, which control multiple low-level attributes of the music sample independently in a continuous manner. This relies on latent regularization and feature disentanglement.
• Presets, which learn the relationship between the levels of the sliding knobs of low-level features, and the selected high-level feature. This relies on Gaussian Mixture VAEs which imposes hierachical dependencies (c → z → X).

List of Models

Model	Trainer Filename	Model Classname	Evaluation Filename
Music FaderNets, Vanilla VAE	trainer.py	MusicAttrRegVAE	test_vanilla_v2.py
Music FaderNets, GM-VAE	trainer_gmm.py	MusicAttrRegGMVAE	test_gmm_v2.py
Pati et al.	trainer_singlevae.py	MusicAttrSingleVAE	test_singlevae_v2.py
CVAE	trainer_cvae.py	MusicAttrCVAE	test_cvae_v2.py --is_cvae
Fader Networks	trainer_fader.py	MusicAttrFaderNets	test_cvae_v2.py
GLSR	trainer_glsr.py	MusicAttrRegVAE	test_glsr_v2.py

Arousal Style Transfer

You can run arousal_transfer.ipynb which uses the GM-VAE model to perform arousal transfer. The steps are documented in the notebook with dependencies and pre-processing stages implemented.

Train

1. Download the Piano e-Competition dataset and VGMIDI dataset. ptb_v2.py should parse the dataset into desired event tokens while executing the trainer file.
2. For VGMIDI, the pre-processed labels and MIDI token sequences are attached here. Kindly download them and ensure that the pathing within ptb_v2.py is correct.
3. Modify the training configurations in model_config_v2.json.
4. Run python <the-trainer-filename>.
5. The trained model weights can be found in params/folder.

Note that to parse MIDI files into event tokens, this fork of Magenta repo is used with several modifications on the token parser.

Evaluate Controllability

To evaluate the controllability of the model (Table 1 in paper), run python <the-evaluation-filename>. Some pre-trained models are attached in the params folder as examples.

Resources

• arXiv paper
• Demo website

Citation

This research work is published at ISMIR 2020 as a conference paper.

@inproceedings{tan20music,
  author = {Tan, Hao Hao and Herremans, Dorien},
  booktitle={Proc. of the International Society for Music Information Retrieval Conference},
  title = {Music FaderNets: Controllable Music Generation Based On High-Level Features via Low-Level Feature Modelling},
  year={2020}
}