Minimum Different Enough Details

There always is a minimum level of differences which human can recognize in order to differentiate two things. below that point, the differences are not distinguishable. The immediate moment of finding the minimum different enough details.
In this piece, both violins have mostly identical music to perform. In a developing process, while still on the same rhythms, some pitches will be occasionally different. In the middle of the piece, we arrive to the climax of differences which some bars have totally different content.  Finally, the moment that one violin has rest while the other one is playing. Both parts merge into and born from each other's sound throughout the music. The whole piece has an arch-inspired structure in which bot instruments are playing almost the same music, they dispart from each other and finally unify again. Color coding is also aiming to elaborate types of differences in the musical materials. Also the scortatura tuning makes the identical parts sound as broken unisons. This piece has been premiered and recorded by the members of JACK Quartet on April 24, 2019 in Baldwin Auditorium at Duke University, Durham, NC;USA.