text:  Maestra, help us get hold of what goes into performing a piece like that, the hours of rehearsal. Yeah, the cumulative hours I think that these kids have spent on their instruments is, you know, you can't even count them. But you hear the result. I mean, they sound pretty fantastic, don't they? Oh, yes. This program is extra special this year because I was able to bring in 10 musicians from the Chicago Symphony Orchestra