Virtual violins?

In Stockholm today to open an international conference Real Learning in Virtual Worlds.

But it opened with a stunning performance by a student violin ensemble, all playing with obvious enjoyment and indeed fun. Music in education is usually mixed age, project based (the "School Production"), in large time blocks (very large if it isn't going too well!), where students are often teachers too. And do you know what? - it works SO well that you can't help but wonder why so much else in schools is NOT like this as well. There is so little evidence that same-age, time-limited, closed, unambitious, task-orientated learning works is there?.