I for some reason cannot stop watching/listening to this video. Something about the black-and-white, the measured pacing, the echo-y stairwell, the heartachingly good harmonizing.
Lord these girls are gorgeous. I would be happy to have a trio of daughters who sing like angels, as the Grannis sisters do. And I have to agree with vchu that the most captivating one is Misa, the shy bookish-looking one on the left.
And the original "God in My Bed" by K's Choice, for comparison. Personally I prefer the Grannis sisters' rendition.