This has been classified as ambient psychfolk by the label and I guess I can see why. There are quite definitely elements of ambient soundscapes, attempts at perceptual expansion by means of altered location recordings and electronic tones, and folk, in the form of vocal stylings. The project is the collaboration between Susan DeLeo and Lauri des Marais, who work mainly in a live performance mode. "Sun Rushing In is a hybrid of Lauri's musique concrête sound design and Susan's acoustic guitar and vocals, creating an atmospheric melancholy and joy. Along with Susan's almost post-rock folk/country stylings on the six-string goes Lauri's progressively textured soundscapes, a haze of quiet low frequency aura projecting the listener into a state of neither/nor Zen. Lauri has also integrated a form of slow movement which she terms Movement So Still With Sound (similar in many respects to Butoh dance), fleshing the act out as an avant performance art session. While Sun Rushing In is mainly performance-based, Postdawn Nurseries Music also has the honor of offering the backing tracks to their performance as an exclusive CD, Sound Collage for Live Performance, making for a perfect listen for homesick or distant memory moods." (from the label site) I think this works best used on the level of background music, not in the sense of being ignored but just under the aural radar, quietly but still audible. Just loud enough to fill the silence with slight vibration.