Released in 1990, AION shows Dead Can Dance, the duo of Lisa Gerrard and Brendan Perry, exploring styles of Medieval times and the Renaissance. The production is excellent, and it ranks among DCD's best albums. AION opens with "The Arrival and the Reunion," a short piece that shows off Lisa's amazing voice as overdubs allow her to provide her own polyphony, with David Navarro Sust (a collaborator on 1989's THE SERPENT'S EGG) providing backing vocals. There are a number of quiet, instrumental pieces on this album which sound highly authentic, such as "Saltarello" (which really is a piece from the 14th century), "Wilderness," and "The Garden of Zephirus." As with any Dead Can Dance album, there are songs that feature either Brendan or Lisa more heavily. Lisa provides among others "Radharc," "The Promised Womb," and "The Song of the Sibyl". Brendan gives us the tragicomic "Fortune Presents Gifts Not According to the Book" and the odd "Black Sun."