This seminar will offer an introduction to Marxist philosophy, and the opportunity to critically survey both classic and recent Marxist thought relevant to music (and sound) as aesthetic, cultural, and socio-political expression, and in relation to the economics of labour and production. It comprises engagement with Marx's writings, and with important work of the first generation of philosophers of the Frankfurt School (and their immediate antecedents of the early 20th century), through neo-Marxist and eco-Marxist texts marking the recent global resurgence of emancipatory thought, which seeks to respond to the ongoing oppressions of late capitalism and the present-day polycrisis.