In DJ sets and laptop performances, an unprecedented level of technological mediation comes into conflict with the expected “liveness” of performance. As a result, musicians frequently express various techno-performative anxieties in explanations of their approaches. In particular, they are concerned that the audience experiences a performance, one that is imbued with a sense of live presence, rather than simply the playback of a recording or the clicking of a mouse. They work to convey this “presence” in a number of ways, which include dancing, other significant physical gestures, and the use of carefully selected electronic hardware. The audience responds in kind, thereby completing the liveness of the event.