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Rodney and Julianne will perform at the Jan. 9 kickoff concert at the Sommet Center along with headline act Montgomery Gentry. The two-day event brings together country music’s biggest stars and the top drivers from NASCAR for autographs, question-and-answer sessions and other activities. Josh Turner, Jason Michael Carroll and NASCAR’s Dale Earnhardt Jr. and Michael Waltrip are slated to appear, with more stars to be announced soon. Tickets for Sprint Sound & Speed are available through ticketmaster.com  or soundandspeed.org .