Re:good question (Score 2, Interesting)

Not always, by any means--things often change at the last minute. Just an example: Yo-Yo Ma played with some students at Patrick Deval's inaugral gala last week (http://news.bostonherald.com/localPolitics/view.b g?articleid=174458). One song they played he finished arranging at 2:00PM the afternoon of the performance, faxed it over to where the students were waiting, and rehearsed with them at 3:30 PM. They performed it a few hours later. Oh, they knew what they were playing in a vague sense before then--they knew the song--but they didn't know the details of what notes they were expected to play (the arrangement). It's not so different from software development after all--in fact, that was the third arrangement of the same song they had been given. Changing requirements, anyone?