It is a story set in the future where genetically engineered designer babies are the socially acceptable norm. The protagonist, an ex-musician by the name of Chesterton is working as a Social Interface in the state's Reproductive Permits.
- first published in the anthology The Inheritance in 2011.
- A Dutch translation (title?) published in 2012 in De verhalen.
- A French translation Boîte à rythme in L’Héritage et autres nouvelles first published in 2012, reprinted in 2013.