"Live electronics performers, streaming their own recorded music from laptops, work differently. They follow the basic template given to us by dub reggae. Take a preexisting song, add effects, momentarily remove ("dub out") parts. Live electronica performers basically mess up their own music, which is pre-built and then disassembled. The more "active" they appear, the more the original piece is being interrupted."
From 'Confessions of A DJ' by Jace Clayton aka DJ/Rupture