Hearts of Space grew out of former architect Stephen Hill’s fascination with space-creating, ambient and contemplative music.

Beginning in 1973, Hill hosted a weekly late-night radio program on KPFA-FM in the San Francisco Bay area.

What began purely as a labor of love eventually became the most popular contemporary music program on public radio. Over the intervening quarter century, Hearts of Space evolved into a multifaceted music and broadcast producer encompassing radio syndication, a record company, and an internet music service.

In January 1983, after ten years evolution as a local program, Hearts of Space began national syndication to 35 non-commercial public radio stations via the NPR satellite system.

Hosted by Hill and original co-producer Anna Turner, within three years the program signed its 200th station and became the most successful new music program in public radio history, as well as the most widely syndicated program of ‘ spacemusic ‘ — a tastemaker for the genre.