By Brandy McDonnellAs the Season 15 Blind Auditions come to a close and the Battle Rounds begin tonight on "The Voice," keep an eye and both ears out for Natalie Brady, a Tulsa-born and bred rocker who electrified the show last week. Now based in Nashville, Tennessee, performed the classic rock anthem "Barracuda" during last week's Blind Auditions, and coach Adam Levine opted to turn his chair for her growling powerhouse delivery within seconds.While the Maroon 5 frontman delighted in Brady's performance, rival coach Jennifer Hudson swiveled her chair after about 90 seconds and seemed a little bemused as to why fellow coaches Kelly Clarkson and Oklahoma country music star Blake Shelton hadn't done likewise.