2015. Stahl, Matt. 2013. ’Unfree Masters: Recording Artists and the Politics of Work’. Durham, NC and London: Duke University Press. ISBN 978-0-82235-343-0 (pbk). 296 pp. Perfect Beat. 16, 1-2 (Dec. 2015), 135–137. DOI:https://doi.org/10.1558/prbt.v16i1-2.27736.