ALT Theatre and performance studies is awash with scholarship that examines performance in relation to its labour processes, modes of management, financial infrastructures, and so forth. But there lacks shared critical understanding of what terms such as “value” or “capital” mean and how they can be applied when studying performance forms like theatre, dance, or live art. The range of meanings that performance scholars attach to the word “commodity” or even the seemingly obvious entities of “class” and “the state,” for example, reveals more than a slight degree of imprecision or disagreement. It indicates a lack of systematic thought and, consequently, a need to interrogate the categories used for discussing performance’s political economy. Collectively written by nine people, “Marxist Keywords for Performance” (2021) contributes to growing critical attention within theatre and performance studies towards political economy by defining key Marxist concepts.