tundratabor/Music_Generator

Data Pre-processing

Navigate to the data folder cd data/
Modify the ORI_FOLDER and DES_FOLDER in 1_batch_xml2abc.py, then run this script:
```
python 1_batch_xml2abc.py
```
This will conver the MusicXML files into standard ABC notation files.
Modify the ORI_FOLDER, INTERLEAVED_FOLDER, AUGMENTED_FOLDER, and EVAL_SPLIT in 2_data_preprocess.py:
```
ORI_FOLDER = ''  # Folder containing standard ABC notation files
INTERLEAVED_FOLDER = ''   # Output interleaved ABC notation files that are compatible with CLaMP 2 to this folder
AUGMENTED_FOLDER = ''   # On the basis of interleaved ABC, output key-augmented and rest-omitted files that are compatible with NotaGen to this folder
EVAL_SPLIT = 0.1    # Evaluation data ratio
```
then run this script:
```
python 2_data_preprocess.py
```
- The script will convert the standard ABC to interleaved ABC, which is compatible with CLaMP 2. The files will be under INTERLEAVED_FOLDER.
- This script will make 15 key signature folders under the AUGMENTED_FOLDER, and output interleaved ABC notation files with rest bars omitted. This is the data representation that NotaGen adopts.
- This script will also generate data index files for training NotaGen. It will randomly split train and eval sets according to the proportion EVAL_SPLIT defines. The index files will be named as {AUGMENTED_FOLDER}_train.jsonl and {AUGMENTED_FOLDER}_eval.jsonl.

We recommend EasyABC, a nice software for ABC Notation previewing, composing and editing.

It's needed to add a line "X:1" before each piece to present the score image in EasyABC :D

Go to the data folder cd data/
Modify the ORI_FOLDER and DES_FOLDER in 3_batch_abc2xml.py, then run this script:
```
python 3_batch_abc2xml.py
```
This will conver the standard/interleaved ABC notation files into MusicXML files.