Silverlight 5's new hardware accelearated 3D API combined with the Silverlight Augmented Reality Toolkit (SLARToolkit).
See the SLARToolkit project site for details:

Related blog post with details:
kodierer.blogspot.com/2011/04/silverlight-5-3d-slartoolkit-augmented.html

SLARToolkit project site:
slartoolkit.codeplex.com

Background music is "Neon Aurora" by Alpha C
8bc.org/music/Alpha+C/Neon+Aurora/_/action=like

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