I've been listening to my Bluegrass station on Pandora (which you may share if you are of a mind to), and remembered that Allison Kraus is a very talented bluegrass musician.  So, I went looking for stuff of hers.  I found this filmed at Union Station on the Grand Ole Opry. 

I got interested in who the child was who picked that mandolin like it had accompanied her in the womb.  Her name is Sierra Hull.  She is all grown up now, and here she is with, I think, her father (regardless, one heck of a picker).  BOY!  Can they ever play those instruments.  On second vewing, I wonder if the dobro player isn't the guitar player in this video.