Red, green and blue. Mix red with green, you get yellow. Blue and red, purple. Green and blue ... Mix two distinct voices, one from the piano and one from the bass. A third distinct voice, this time a cymbal or two. New sounds emerge with different combinations, unforeseen by the musicians. The combinations create their own voice - different and greater than the sum of its parts. It is this untamable and unexpected musical stuff - in harmony at one moment and relentlessly colliding in the next - that is the gift of improvisation. Thanks!