Well ya know Tom, Rockabilly is basically the mix of Jump Blues and Hillbilly. Rosie is awfully good at Rockabilly (and Hillbilly), and without a grounding in Blues that would not be possible. Another singer in Rosie's league is Lou Ann Barton, from Austin Texas. She was in an early version of Double Trouble with Stevie Ray (when he was merely a member), and now tours with his brother Jimmie. Her Old Enough album (produced by the great Jerry Wexler and the not-so-great Glen Frey ;-) is fantastic!