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JamALT: A Formatting-Aware Lyrics Transcription Benchmark

JamALT is a revision of the JamendoLyrics dataset (80 songs in 4 languages), adapted for use as an automatic lyrics transcription (ALT) benchmark.

The lyrics have been revised according to the newly compiled annotation guidelines, which include rules about spelling, punctuation, and formatting. The audio is identical to the JamendoLyrics dataset. However, only 79 songs are included, as one of the 20 French songs (La_Fin_des_Temps_-_BuzzBonBon) has been removed due to concerns about potentially harmful content.

Note: The dataset is not time-aligned as it does not easily map to the timestamps from JamendoLyrics. To evaluate automatic lyrics alignment (ALA), please use JamendoLyrics directly.

See the project website for details.

Loading the data

from datasets import load_dataset
dataset = load_dataset("audioshake/jam-alt")["test"]

A subset is defined for each language (en, fr, de, es); for example, use load_dataset("audioshake/jam-alt", "es") to load only the Spanish songs.

By default, the dataset comes with audio. To skip loading the audio, use with_audio=False. To control how the audio is decoded, cast the audio column using dataset.cast_column("audio", datasets.Audio(...)). Useful arguments to datasets.Audio() are:

  • sampling_rate and mono=True to control the sampling rate and number of channels.
  • decode=False to skip decoding the audio and just get the MP3 file paths.

Running the benchmark

The evaluation is implemented in our alt-eval package:

from datasets import load_dataset
from alt_eval import compute_metrics

dataset = load_dataset("audioshake/jam-alt", revision="v1.0.0")["test"]
# transcriptions: list[str]
compute_metrics(dataset["text"], transcriptions, languages=dataset["language"])

For example, the following code can be used to evaluate Whisper:

dataset = load_dataset("audioshake/jam-alt", revision="v1.0.0")["test"]
dataset = dataset.cast_column("audio", datasets.Audio(decode=False))  # Get the raw audio file, let Whisper decode it

model = whisper.load_model("tiny")
transcriptions = [
  "\n".join(s["text"].strip() for s in model.transcribe(a["path"])["segments"])
  for a in dataset["audio"]
compute_metrics(dataset["text"], transcriptions, languages=dataset["language"])

Alternatively, if you already have transcriptions, you might prefer to skip loading the audio:

dataset = load_dataset("audioshake/jam-alt", revision="v1.0.0", with_audio=False)["test"]


When using the benchmark, please cite our paper as well as the original JamendoLyrics paper:

  author       = {Ond\v{r}ej C\'ifka and
                  Constantinos Dimitriou and
                  {Cheng-i} Wang and
                  Hendrik Schreiber and
                  Luke Miner and
                  Fabian-Robert St\"oter},
  title        = {{Jam-ALT}: A Formatting-Aware Lyrics Transcription Benchmark},
  eprint       = {arXiv:2311.13987},
  year         = 2023
  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}, 
  address={Rhodes Island, Greece},
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