Mass Music writes about musical instruments and studio equipment as commercial objects. Every piece is about something that can be looked up: a named company, a named product, a filing, a listing, a production run. Where a figure will go stale, the sentence carries the period it belongs to.
The material divides into five sections. The Trade follows what happened to the market — the bankruptcies, the acquisitions, the channels that replaced the shop floor. What Sells Now covers the equipment that reshaped what a shop stocks. Materials and Rules takes the timber listings and the regulations that decide what an instrument may be made of. Working Order is the trade practice that keeps equipment playable. The Long Objects is for the designs that arrived, settled, and were never really improved on.
The complete roster is on one page: all pieces. Photography is credited beneath each frame.