Watermark is an album by Enya, released on September 19, 1988. The album features music in different styles, displaying Enya's sound of multi-tracked vocals with keyboards, percussion instruments, and elements of Celtic, ambient, and new-age music, though Enya believes her music does not belong in the latter genre. Watermark received mixed reviews from critics and it became an unexpected commercial success, which propelled Enya to worldwide fame.