In 2002 Aphex Twin, who has been described as "the most inventive and influential figure in contemporary electronic music," appears to have sneaked the digital image of a devilish face into at least one of his songs. The image of a creature with a diabolical grin was accidentally discovered on artist ́s EP “Windowclicker” in 1999. The image is only revealed when the song is played on a computer through special software that visualizes sound waves. The existence of the image has not been publicized by Aphex Twin or his record label.