Nope.
I've asked Vlady (the resident garageband expert at Apple galleria houston) and there is NO way it can be done.
Well, you can take HUNDREDS of screenshots and put them all together.
There was even a class with Francis Preve at Houston Galleria, and I asked him the same question. He's written a book about GarageBand, so he KNOWs it. He said it can't be done.
We can always hope it'll be there in Garageband 3!! (along with key changing in piece.)