Trace audience cell phone numbers

A 19-year-old girl admits, "For many people, a mobile phone is a time killer rather than a time saver."  The mobile phone is used for real time coordination while on the run, adolescents use it to manage their freedom, and teens text to each other day and night if they want to trace cell phone numbers.  But if you travel frequently, a mobile phone is a great convenience.  Because the exact location and tone of each participant’s mobile phone is known in advance, the concert is able to present a diverse range of unprecedented sonic phenomena and musically interesting structures, such as waves of polyphony which cascade across the audience.