It would be a big logistical issue. Just like an open source software release, which is basically what I'm suggesting, just for music instead of software. But it would demonstrate steemit's potential, not as a technology, but as a global community.
I don't actually see Whitacre as being critical to success. It would be nice to have him because he's already done something similar, but what's important is to highlight the community, not the celebrity. You're right, it might be too early, or launching a project like this might attract the talent it needs. There's no way to tell without trying it.
Announce the purpose and let the people organize themselves and prepare to be amazed (or disappointed. ; -).
Yes that makes more sense:)