Local teen Allison Brock is counting her lucky stars after winning tickets to a OneRepublic concert in Dallas, as well as a meet and greet with band members before the performance.“Earlier this summer, I entered a contest online that was jointly sponsored by Live Nation and the American Cancer Society,” said Brock. “The prize was a trip to Dallas, Texas to attend a OneRepublic meet and greet and concert. OneRepublic is one of my favorite bands, so I decided to enter.