I enjoyed writing this short piece in Music Theory Spectrum’s recent symposium on Public Music Theory — a set of responses to the talks delivered at the 2023 plenary session at the Society for Music Theory conference. My contribution examines the concept of “twenty-first-century instruments of music theory” as a form of public instruction and engagement, arguing that modern tools like DAWs (and even the internet itself!) give us not only new ways of sharing musical insights, but new ways of exploring and expressing what music is and how it works.