>> david moses: david moses! 15! brooklyn, new york! to do it?" >> higginsen: "is she going to do it?" >> rodriguez: rhonda rodriguez! >> higginsen: yes! she did it. >> ♪ go down, moses... ♪ ♪ >> stahl: you spend nine months with these kids, you give them everything. and they finally get up for this performance. >> higginsen: i couldn't stay in my chair. my heart's dancing. my mind's racing. i'm watching everything and i'm watching everybody. >> stahl: and what she, and everyone else, saw that day was a group of teenagers transformed. ♪ ♪ >> francois: i can't even describe it. it's the most wonderful thing i ever been a part of with my life. ♪ ♪ >> stahl: are you going to come back next year? >> david moses: definitely. >> stahl: definitely? >> david moses: definitely. >> stahl: what's going on inside? >> howard: joy. that's what's inside my heart all the time when i'm in here. >> stahl: do you ever think that you're actually saving some of these kids? >> higginsen: i guess i'm thinking that this music can make it better. it will make l