In 2019, Miller Puckette and I received a joint award from UC San Diego’s Committee on Research to undertake a project with two primary goals: the ability to accurately track a timbrically complex, two- part continuity, that was constantly varying while being generated from the same physical source, a cello. The ability to differentiate the two “parts” of a performed succession of double-stops that continuously alter their pitch, their dynamic balance, and their timbral profile will, in-turn, allow the composition of a musical composition for live cellist and a duo partner who is a computer musician managing the constant transformation of live events by selected algorhythms (in particular a spectrally sculpting one named THINNR).