Plane9 is a 3d visualizer where you never have to settle for just one view ever again. From the start you have over 260 predefined scenes to choose from. But it doesn't end there since the scenes can be combined with one another to form a near endless supply of new views to experience. To form a continous experience so does the visualizer utilize 35 transition scenes when moving from scene to scene.
The visualizer can be used either as a winamp plugin, a Windows Media Player plugin, screensaver or oculus rift visualizer. In it's standalone modes it is sound sensitive and reacts to what your currently listening to, be it from spotify, iTunes or any another sound source it can even react to what you record from a microphone or the like.
To get a feel for what it can do check the music video.