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This is the official repository for M²UGen: Multi-modal Music Understanding and Generation with the Power of Large Language Models.

🚀 Introduction

The M²UGen model is a Music Understanding and Generation model that is capable of Music Question Answering and also Music Generation from texts, images, videos and audios, as well as Music Editing. The model utilizes encoders such as MERT for music understanding, ViT for image understanding and ViViT for video understanding and the MusicGen/AudioLDM2 model as the music generation model (music decoder), coupled with adapters and the LLaMA 2 model to make the model possible for multiple abilities. The model architecture is given in m2ugen.py.

To train our model, we generate datasets using a music captioning and question answering model, i.e. the MU-LLaMA model. The dataset generation methods are given in the Datasets folder.

🤗 HuggingFace Demo

We have provided a HuggingFace Space to see our model in action: M2UGen/M2UGen-Demo.

🤖 Model Setup

We use Python 3.9.17 for this project and the library requirements are given in requirements.txt. Create a conda environment using

conda create --name <env> --file requirements.txt

Ensure that the NVIDIA Driver is version 12 or above to be compatible with PyTorch 2.1.0.

For the working of our model, Facebook's LLaMA-2 model weights are required, details on obtaining these weights are given on HuggingFace.

The trained checkpoints for our model is available here:

• M²UGen with MusicGen Small
• M²UGen with MusicGen Medium
• M²UGen with AudioLDM2

The needed pretrained multi-modal encoder and music decoder models can be found here:

• MERT
• ViT
• ViViT
• MusicGen
• AudioLDM 2

The directory of the checkpoints folder can be organized as follows:

.
├── ...
├── M2UGen                
│   ├── ckpts
│   │   │── LLaMA
│   │   │   │── 7B
│   │   │   │   │── checklist.chk
│   │   │   │   │── consolidated.00.pth
│   │   │   │   │── params.json
│   │   │   │── llama.sh
│   │   │   │── tokenizer.model
│   │   │   │── tokenizer_checklist.chk
│   │   │── M2UGen-MusicGen
│   │   │   │── checkpoint.pth
│   │   │── M2UGen-AudioLDM2
│   │   │   │── checkpoint.pth
│   │   │── knn.index
└── ...

Once downloaded, the Gradio demo can be run using these checkpoints.

For model with MusicGen

python gradio_app.py --model ./ckpts/M2UGen-MusicGen/checkpoint.pth --llama_dir ./ckpts/LLaMA-2 --music_decoder musicgen

For model with AudioLDM2

python gradio_app.py --model ./ckpts/M2UGen-AudioLDM2/checkpoint.pth  --llama_dir ./ckpts/LLaMA-2 --music_decoder audioldm2  --music_decoder_path cvssp/audioldm2

🗄️ Dataset Generation

We use the MU-LLaMA and MPT-7B models to generate the MUCaps, MUEdit, MUImge and MUVideo datasets. For each of the datasets, run the scripts in the folder Datasets in its numbered order to generate the datasets.

The datasets are also available for download here:

• MUCaps
• MUEdit
• MUImage
• MUVideo

Apart from the generated datasets, M2UGen also utilizes the COCO and Alpaca datasets. For the COCO dataset, download the 2014 train dataset from here and place the files in the COCO folder under Datasets. The Alpaca dataset file is already provided under Datasets/Alpaca.

🔧 Model Training

To train the M²UGen model, run the train_musicgen.sh or train_audioldm2.sh script. The scripts are designed to train the model for all three stages with MusicGen and AudioLDM2 music decoders respectively.

The main model architecture is given in m2ugen.py and the modified MusicGen and AudioLDM2 architectures are present within the musicgen and audioldm2 folders respectively. The data folder contains the python files to handle loading the dataset. The dataset.py file will show the use of different datasets based on the training stage. The code for the training epochs are present in engine_train.py.

🔨 Model Testing and Evaluation

To test the M²UGen model, run gradio_app.py.

usage: gradio_app.py [-h] [--model MODEL] [--llama_type LLAMA_TYPE] [--llama_dir LLAMA_DIR]
                      [--mert_path MERT_PATH] [--vit_path VIT_PATH] [--vivit_path VIVIT_PATH]
                      [--knn_dir KNN_DIR] [--music_decoder MUSIC_DECODER]

optional arguments:
  -h, --help            show this help message and exit
  --model MODEL         Name of or path to M2UGen pretrained checkpoint
  --llama_type LLAMA_TYPE
                        Type of llama original weight
  --llama_dir LLAMA_DIR
                        Path to LLaMA pretrained checkpoint
  --mert_path MERT_PATH
                        Path to MERT pretrained checkpoint
  --vit_path VIT_PATH   Path to ViT pretrained checkpoint
  --vivit_path VIVIT_PATH
                        Path to ViViT pretrained checkpoint
  --knn_dir KNN_DIR     Path to directory with KNN Index
  --music_decoder MUSIC_DECODER
                        Decoder to use musicgen/audioldm2

To evaluate the M²UGen model and other compared models in our paper, please refer to Evaluation folder.

🧰 System Hardware requirements

For training, stage 1 and 2 use a single 32GB V100 GPU while stage 3 uses 2 32GB V100 GPUs. For inference, a single 32GB V100 GPU is used. For loading model checkpoint, approximately 49GB of CPU memory is required.

🫡 Acknowledgements

This code contains elements from the following repo:

• crypto-code/MU-LLaMA

✨ Cite our work

If you find this repo useful, please consider citing:

@article{hussain2023m,
  title={{M$^{2}$UGen: Multi-modal Music Understanding and Generation with the Power of Large Language Models}},
  author={Hussain, Atin Sakkeer and Liu, Shansong and Sun, Chenshuo and Shan, Ying},
  journal={arXiv preprint arXiv:2311.11255},
  year={2023}
}

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