PianoBart

Article: Xiao Liang, Zijian Zhao, Weichao Zeng, Yutong He, Fupeng He, Yiyi Wang, Chengying Gao*, PianoBART: Symbolic Piano Music Understanding and Generation through Large-Scale Pre-Training (accepted by ICME 2024)

Some parts of our code borrows from muzic/musicbert at main · microsoft/muzic (github.com) [1] and wazenmai/MIDI-BERT: This is the official repository for the paper, MidiBERT-Piano: Large-scale Pre-training for Symbolic Music Understanding. (github.com) [2].

1. Dataset

The datasets utilized in our paper are as follows:

Pretrain: POP1K7, ASAP, POP909, Pianist8, EMOPIA

Generation: Maestro, GiantMidi

Composer Classification: ASAP, Pianist8

Emotion Classification: EMOPIA

Velocity Prediction: GiantMidi

Melody Prediction: POP909

You can generate data using the repositories mentioned in [1] and [2]. The process of organizing the data is the same as described in [2]. Additionally, you can use the --datasets and --dataroot options to specify the name and root path of your dataset.

2. How to run the model

2.1 About the environment

We provide a conda-based environment. To use this environment, please install it using the following command:

conda env create -f environment.yml

This environment has been tested and is working properly.

To run the model, please refer to the code at the bottom of "main.py", which is shown as follows.

if __name__ == '__main__':
    pretrain()
    #finetune()
    #finetune_generation()
    #abalation()

You can uncomment the corresponding function to perform the desired task.

2.2 Pretrain

Uncomment the “pretrain()” in main.py and run it.

python main.py

2.3 Finetune

2.3.1 Generation

Note: Before run the code, please do the following steps to patch the code.

1. Locate the file of shapesimilarity.py, which probably is in the path of your_env/lib/python{version}/site-packages/shapesimilarity/shapesimilarity.py.

2. Use the patch we provide, simply just run the following command in the terminal.

patch <path of shapesimilarity.py> < patches/shapesimilarity.patch

For example, if you use the conda-based environment we provide, you can run the following command.

Assume the conda environment is located in ~/anaconda3/envs/Bart.

patch ~/anaconda3/envs/Bart/lib/python3.8/site-packages/shapesimilarity/shapesimilarity.py < patches/shapesimilarity.patch

Uncomment the finetune_generation() in main.py and run it.

python main.py

Some parameters you may need to change:

• --ckpt: The path of the model you want to load.
• --datasets: The name of the dataset you want to use.
• --dataroot: The root path of the dataset you want to use.
• --cuda_devices: The GPU you want to use.
• --class_num: The class amount of the task.

for example, if you want to use the GiantMIDI1k dataset which we used, you can run it with

python main.py --datasets GiantMIDI1k --dataroot Data/output_generate/GiantMIDI1k/gen_method --ckpt <model path> --cuda_devices <GPU ids>

In the following tasks, you can uncomment the finetune() in main.py and run it.

2.3.2 Composer Classification

python main.py --datasets <dataset name> --dataroot <root path of dataset> --class_num <class number> --task composer

2.3.3 Emotion Classification

python main.py --datasets <dataset name> --dataroot <root path of dataset> --class_num <class number> --task emotion

2.3.4 Velocity Prediction

python main.py --datasets <dataset name> --dataroot <root path of dataset> --class_num <class number> --task velocity

2.3.5 Melody Prediction

python main.py --datasets <dataset name> --dataroot <root path of dataset> --class_num <class number> --task melody

3. Demo

In this section, you can input an intro (MIDI file) to PianoBart, and it will generate a new MIDI file inspired by the input. Simply provide the intro as input, and PianoBart will use its trained models to generate a new MIDI file with a similar style and tone.

python --ckpt <model path> --input <input path> --output <output path> demo.py

Please note that there is a bug in demo.py that restricts the usage to only one CUDA device or CPU.

You can also use eval_generation.py to generate music in one go, with the output format as numpy.array. However, you must set the batch size as 1 and use only one GPU or CPU.

python --ckpt <model path> --dataset_path <dataset_path> --dataset_name <dataset_name> --output <output path> eval_generation.py