The relationship box, they called it, and it only came up with 
higher-quality ractives, where continuity was important. The disping process 
worked so well that any ractor, male or female, bass or soprano, would sound 
the same
to the end user. But discriminating customers could of course tell ractors 
apart anyway because of subtle differences in style, and once they had a 
relationship with one performer, they liked to keep it. Once Miranda checked 
the box and signed off, she'd get first crack at any more Princess Nell 
jobs.