Halcyon Days is a collaborative album by the ambient musicians Steve Roach, Stephen Kent and Kenneth Newby.

At that time most of the United States were experiencing severe winter weather, but the Sonoran Desert region, where this album was recorded, was enjoying a period temperate calm and clear skies.

While there, the group enjoyed casual walks through the surrounding desert, serving as inspiration for their daily creative explorations in the studio.

In the myth, the seas are calmed during a two-week period surrounding the winter solstice, when Alcyon's descendants lay their eggs on the still water.

The music has a predominantly acoustic quality although much of the percussion and textures are rendered by computer algorithms designed by Kenneth Newby (Halcyon Days, Calyx Revelation, Rainfrog Dreaming) or programmed by Steve Roach (First Day, Kingfisher Flight), with didgeridoo and flute.