Zachary Carrettín writes: "I chose "Metamorphosis" as the title of this album for several reasons. Having lived with these works for a quarter century, they have changed me, and I have changed along the way. During this project my dear friend of thirty-three years, and former mentor, passed away. Ken and I spent most of my first master's degree studying Bach manuscripts and first editions, and I think his influence is with me all the time. He always felt that the treatises and other primary sources were there to provide possibilities rather than to limit our scope. Our conversations went deep and wide, and included a couple of extended journeys in Europe and the United States, studying manuscripts together. I recorded these pieces during the Covid-19 pandemic, just weeks after my uncle in Italy passed away, and my aunt in Florida passed away, and while my dear friend in Colorado was preparing himself to pass onward from this life as well. Due to Coronavirus concerns, my partner in life and music-Mina, our chihuahua Apple, and I drove thirty hours each way from Colorado to Virginia and back, not stopping at restaurants nor hotels, to make this recording at the chapel of Sono Luminus Studios..."