Laura MusselmanThe Black Keys, seen here at the Paramount Theatre in October 2010, will play a free show Friday in University Village.Microsoft is set to open a new retail store in University Village tomorrow morning, and it’s booked a major headliner to help celebrate. The Grammy-winning, El Camino-peddling Black Keys will play a free show at the Microsoft Store on Friday at 7 p.m. The catch? Tickets are available on a first-come, first-serve basis starting tomorrow at 9:30 a.m., when the store opens to the public. Black Keys shows are known to sell out in less than a few hours, so set your alarm and get there early if you want tickets. The first 1,000 visitors will receive two premier-viewing tickets to the show (or, if you so choose, to a performance by OneRepublic on Saturday), and general-admission tickets will be available after that. For more information, check out the Microsoft Store’s website. Follow us on Facebook and Twitter.