"Good improvisation communicates harmonic progression melodically. Effective melodies manipulate harmonic content through the use of guide tones and preparatory gravity notes, masterfully woven in systematic tension, release, and transparent harmonic definition."
It's all electronically produced, but the graphics and music on the video below are detailed and mesmerizing. Using such sophisticated software programs as Blender and a little ingenuity, the MIDI based computer generated performances are frighteningly lifelike.
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