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Datasets:
jamendolyrics
/
jam-alt-lines

Tasks:
Automatic Speech Recognition
Modalities:
Audio
Text
Formats:
soundfolder
Languages:
English
French
German
Size:
10K - 100K
ArXiv:
Tags:
music
lyrics
evaluation
benchmark
transcription
pnc
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metadata
task_categories:
  - automatic-speech-recognition
multilinguality:
  - multilingual
language:
  - en
  - fr
  - de
  - es
tags:
  - music
  - lyrics
  - evaluation
  - benchmark
  - transcription
  - pnc
configs:
  - config_name: pure
    data_files:
      - split: test
        path:
          - pure/*/metadata.jsonl
          - pure/*/audio/*.flac
    default: true
  - config_name: pure-de
    data_files:
      - split: test
        path:
          - pure/de/metadata.jsonl
          - pure/de/audio/*.flac
  - config_name: pure-en
    data_files:
      - split: test
        path:
          - pure/en/metadata.jsonl
          - pure/en/audio/*.flac
  - config_name: pure-es
    data_files:
      - split: test
        path:
          - pure/es/metadata.jsonl
          - pure/es/audio/*.flac
  - config_name: pure-fr
    data_files:
      - split: test
        path:
          - pure/fr/metadata.jsonl
          - pure/fr/audio/*.flac
  - config_name: merged
    data_files:
      - split: test
        path:
          - pure/*/metadata.jsonl
          - pure/*/audio/*.flac
          - groups/*/metadata.jsonl
          - groups/*/audio/*.flac
  - config_name: merged-de
    data_files:
      - split: test
        path:
          - pure/de/metadata.jsonl
          - pure/de/audio/*.flac
          - groups/de/metadata.jsonl
          - groups/de/audio/*.flac
  - config_name: merged-en
    data_files:
      - split: test
        path:
          - pure/en/metadata.jsonl
          - pure/en/audio/*.flac
          - groups/en/metadata.jsonl
          - groups/en/audio/*.flac
  - config_name: merged-es
    data_files:
      - split: test
        path:
          - pure/es/metadata.jsonl
          - pure/es/audio/*.flac
          - groups/es/metadata.jsonl
          - groups/es/audio/*.flac
  - config_name: merged-fr
    data_files:
      - split: test
        path:
          - pure/fr/metadata.jsonl
          - pure/fr/audio/*.flac
          - groups/fr/metadata.jsonl
          - groups/fr/audio/*.flac

Jam-ALT Lines

Jam-ALT Lines is a line-level version of the Jam-ALT lyrics transcription dataset. Unlike Jam-ALT, this dataset contains one audio segment for each lyrics line, facilitating research that considers each line as a separate unit.

See the Jam-ALT project website for details and the JamendoLyrics community for related datasets.

Dataset flavors

Lyrics lines may overlap in time, which makes it impossible to have a one-to-one correspondence between lines and audio segments while including a complete and accurate transcription for each. For this reason, the dataset comes in two flavors:

  • pure, containing only lines without significant temporal overlap with other lines;
  • merged, where (transitively) overlapping lines are grouped.

Both of these strategies ensure that no two segments overlap, and hence all singing in each segment is completely transcribed.

The default is pure, i.e. load_dataset("jamendolyrics/jam-alt-lines", split="test") will only contain lines without overlap. Use load_dataset("jamendolyrics/jam-alt-lines", "merged", split="test") to include segments corresponding to overlapping line groups.

Each flavor is further divided into subsets by language: pure-en, pure-es, pure-de, pure-fr, merged-en, merged-es, merged-de, merged-fr. (This is done according to the language column, which reflects the language of each line.)

Columns

  • song_name: the name of the song (name in Jam-ALT)
  • audio: the audio of the segment
  • text: the transcript of the segment
  • language: the language of the segment; this can be different from the language of the song, but only if the line is entirely and clearly in a different language
  • song_language: the language of the song (language in Jam-ALT)
  • line_indices: the indices of the lines included in the segment
  • start_time: the start time of the segment in the song
  • end_time: the end time of the segment in the song
  • merged: true if the segment is composed of a group of overlapping lines
  • artist, title, genre, license_type: song metadata

Dataset creation process

The dataset was generated quasi-automatically from Jam-ALT using the create_dataset.py and fix_languages.py scripts.

  1. The start, end, and text of each lyrics line was extracted.
  2. Overlaps were handled as follows:
    • Groups of lines with large overlaps (> 0.2 s) were removed (pure flavor) or merged to form a single segment (merged flavor).
    • Small overlaps (≤ 0.2 s) were reduced (to at most 0.1 s) by shortening the first of each pair of overlapping segments.
  3. A padding of up to 0.5 s was added on each side of a segment where possible without creating or increasing overlaps. This was done to counteract inaccuracies in the original timestamps.
  4. The audio between the adjusted start and end time was extracted.
  5. The language of the segment was estimated from the text, and if not matching the language of the song with sufficient confidence, it was checked and corrected manually. The language was changed from the language of the song only if the segment was entirely and clearly in one of the other four languages of the dataset (en, es, de, fr). Otherwise, it was set to the language of the song.

Citation

When using the dataset, please cite the Jam-ALT ISMIR paper as well as the ICME workshop paper, which introduced the line-level timings. Consider also citing the JamendoLyrics paper. 

@inproceedings{cifka-2024-jam-alt,
  author       = {Ond{\v{r}}ej C{\'{\i}}fka and
                  Hendrik Schreiber and
                  Luke Miner and
                  Fabian{-}Robert St{\"{o}}ter},
  title        = {Lyrics Transcription for Humans: {A} Readability-Aware Benchmark},
  booktitle    = {Proceedings of the 25th International Society for 
                  Music Information Retrieval Conference},
  pages        = {737--744},
  year         = 2024,
  publisher    = {ISMIR},
  doi          = {10.5281/ZENODO.14877443},
  url          = {https://doi.org/10.5281/zenodo.14877443}
}
@inproceedings{syed-2025-mss-alt,
  author       = {Jaza Syed and
                  Ivan Meresman-Higgs and
                  Ond{\v{r}}ej C{\'{\i}}fka and
                  Mark Sandler},
  title        = {Exploiting Music Source Separation for Automatic Lyrics Transcription with {Whisper}},
  booktitle    = {2025 {IEEE} International Conference on Multimedia and Expo Workshops (ICMEW)},
  publisher    = {IEEE},
  year         = {2025}
}
@inproceedings{durand-2023-contrastive,
  author={Durand, Simon and Stoller, Daniel and Ewert, Sebastian},
  booktitle={2023 {IEEE} International Conference on Acoustics, Speech and Signal Processing (ICASSP)}, 
  title={Contrastive Learning-Based Audio to Lyrics Alignment for Multiple Languages}, 
  year={2023},
  pages={1-5},
  address={Rhodes Island, Greece},
  doi={10.1109/ICASSP49357.2023.10096725}
}