Never listened to the Nevel Brothers. Not because I don't like them - I'm just pretty limited in my exposure to music. However, every once in a while you hear someone singing and it actually makes you stop what you're doing and listen. For me, the last time that happened was when Josh Groban (sp?) did the song 'you raise me up'. I was doing something else when that song came on and my first thought was the voice was very distinguished (and I generally prefer female vocalists)....and then I really started listening.
As I say, I'm not a music buff, but once in a while I luck into catching something special....and it stays with you.
As for daughters singing, My oldest could've cracked glass even a year ago, but now she's getting the hang of carrying a tune instead of singing in difiance of it. It's quite amazing to see how she's progressed and more so to realize that unlike me, she will have a beautiful voice! - and more so, that she sings for the love of it instead of worrying about it being perfect!