Into the Labyrinth (Dead Can Dance album) and Gerrard played all instruments, without guest musicians. The lyrics are in English on tracks 2–4, 8, and 11. Gerrard sings in a self-created wordless vocal technique similar to glossolalia on tracks 1, 5–7, 9–10. Tracks 3 and 10 were performed a cappella. In the UK, the CD album was simultaneously released along a limited edition double vinyl LP (featuring "Bird" and "Spirit", the two 1991 bonus tracks from "A Passage in Time"). The title alludes to the classic legend of Greek mythology about Theseus going into the Labyrinth against the Minotaur. While not necessarily a concept album, this link
Daedalian Opus to the player. At the final level, the player is given the 2x2 square O tetromino and must complete an 8x8 square puzzle. After completing each level, the player was given a password to access that level at a later time. Each password was a common English four-letter word, so that by guessing common four-letter words, players could potentially access levels they had not actually reached by playing the game. The name of the game was inspired by Daedalus, the mythical character of Greek legend who created the labyrinth. A faithful fan version was later coded for the MSX computer