Beyoncé and Jay Z kick off their joint “On the Run” summer tour in Miami tonight, and despite reportedly failing to sell out several shows, the reps for the duo claim the tour will be the second most successful tour of all time.

The superstar couple will tour together through September, and according to People, they will perform more than 40 songs a night, so obviously the superstar couple has been working around the clock to prepare for their concerts.

Check out a bunch of behind the scenes photos Jay Z released (via his Life+Times website) showing him and his wife rehearing for their big stadium tour here: