I just watched Les Miserables as performed by students at our school. Les Miz is... hard. Jean Valjean is basically unsingable. Almost every major role has a song that stretches their range to the very limit.
And all I can say is: Damn. It was the students who cajoled the drama director to do the play; they took it upon themselves to do the best and most difficult musicals out there.
And they pulled it off.
I had goosebumps.