Table 2 Evaluation of ELF’s and the lyrics extraction approaches used in [[19]] and [[24]]

letras.mus.br

0.9226

1.0

1.0

0.9998

0.9998

0.7199

0.3556

vagalume.com.br

0.9151

0.9191

1.0

1.0

1.0

0.7202

0.3434

songlyrics.com

0.9753

0.9761

0.9767

0.9780

0.9780

0.6389

0.3753

6lyrics.com

0.9141

0.9800

0.9972

0.9972

0.9966

0.5808

0.3721

vounessa.com.br

0.9996

0.9996

0.9995

0.9996

0.8960

0.6379

0.3409

lyricmania.com

0.9552

0.9617

0.9618

0.9617

0.9617

0.6295

0.3703

lyricshall.com

0.9702

0.9706

0.9706

0.9706

0.9162

0.8781

0.1893

lyricsoncall.com

0.9668

0.9666

0.9666

0.9787

0.9787

0.5932

0.3232

lyricspedia.com

0.9974

0.9967

0.9920

0.9920

0.9905

0.6725

0.3756

lyricsreg.com

0.9533

0.9686

0.9689

0.9730

0.9730

0.7305

0.3474

moron.nl

0.8847

0.9890

1.0

1.0

1.0

0.8088

0.3907

themusic-world.com

0.9905

0.9890

0.9922

0.9923

0.9922

0.7096

0.3646

Average

0.9537

0.9764

0.9855

0.9869

0.9736

0.6933

0.3457