Grooveshark has teamed up with White Castle to offer 1 lucky person tickets to Summerfest. Enter the sweepstakes by June 5th, and you and a friend might find yourselves enjoying round-trip airfare, lodging for 3 nights, and a full 3-day pass to the world’s largest music festival. Oh, and in case you need an extra nudge, take a peek at what acts will be taking the stage at the June 26th event.:
Enter the sweepstakes by June 5th for a chance to win.