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This new holiday version of Bjork's Solstice app from Biophilia is based on a poem celebrating the Christmas season by poet / author Sjon, comparing the solar system to a Christmas tree.
At the center of the app is a sun from which the user pulls rays of light to form a circular harp of strings plucked by colorful orbiting planets; tilt the device and the orbital planes turn into the branches of a three-dimensional Christmas tree, the stars becoming snowflakes. In Solstice, Bjork plays the "Solstice" song with a specially commissioned pendulum-harp which embodies the idea of gravity that was central to the song's creation.
Solstice was developed with Max Weisel, creator of the bestselling Soundrop App, and Bjork's longtime design collaborators M/M (Paris).