This document discusses the history and evolution of popular music and media technologies. It explores how recording technologies in the late 19th/early 20th century commodified music by separating the listener from the live performance. New technologies like radio broadcasting further changed listening experiences. The document then outlines the development of formats like records, tapes, MP3s, and streaming services and how they shaped music consumption. It also examines debates around how media/technologies deterministically shape culture or are shaped by social forces.