Disillusion

is the fourth studio album by Japanese heavy metal band Loudness. It was recorded, mixed and mastered in London, England, in 1983 and released at the beginning of 1984. The sound engineer chosen for the recording sessions was the expert Julian Mendelsohn, who had previously worked with acts like Yes, Elton John, Jimmy Page and Bob Marley. The original Japanese version was licensed and released by Music for Nations in the UK and Roadrunner Records in Europe. Attention by major US labels for the band and the need to make their work accessible to Western audiences, prompted a new release of the album with vocal tracks sung in English on July 1, 1984. The English version opened the album with the instrumental "Anthem (Loudness Overture)" by Akira Takasaki, which was missing in the original Japanese release.