Dead Can Dance made ethereal, Renaissance pop music. They were an obscure Australian duo, formed in 1981, who brought fourteenth century music to modern life by adding world beats. Aion, their fifth album, is as much Gregorian chanting as it is Middle Eastern mantras and hypnotic choral explosions. This is the kind of music that immediately brings to mind towering, ancient cathedrals, the mysterious gloom of European catacombs and misty, rolling hills at dawn. Dead Can Dance created lush and, at times, melancholy neoclassical – never better represented than by Aion’s album cover itself, a detail of Hieronymus Bosch’s triptych, The Garden of Earthly Delights.