Duality Keys was composed for flutist
Laura Lentz, and is inspired by wave/particle duality. In the first section, the electronics are made from chopping up the sound of two notes played together on a keyboard into rapid streams of particles. In the middle section, the waveform of the keyboard dyad is put into wavetable synthesizers and tiny segments of it become the waves being oscillated and processed. And in the final section, both approaches — the particles and the waves — are used simultaneously. Amidst all of that, the alto flute plays various perspectives on a slow melody.