I love William Denton’s imagination:

In this STAPLR composition, one one-minute iteration of Vexations is played for each minute of help given at any desk at York University Libraries that day. It keeps a running counter of how many more minutes it should play. Let’s say that at 0900 someone checks their email and answers a quick research question that takes them five minutes. They enter that into our reference statistics system, where STAPLR sees it and counts 5. It starts to play five iterations. One minute later, the counter is at 4. One minute later, the counter goes down to 3, but there’s another question in the system, this time a virtual chat that took 10 minutes to answer, so the counter goes up to 13. After one iteration it goes down to 12, then 11, then up again if there’s another question. If the counter reaches 0 it will wait and start back up when there’s another question answered.

STAPLR is Sounds in Time Actively Performing Library Reference.

See also CBC Spark Interview: SoundCloud + Pachube + Energy from 2011.