If the beginning of Blake Shelton's Ten Times Crazier tour is any indication, the singer is about to have the most successful run of his career. The first six shows of his cross-country trek sold out, with tickets to additional shows also going quickly.

The early success of the tour, which kicked off July 19 in Virginia, was a surprise even to Shelton. "I heard music playing and just figured it was beach goers but then I went outside and realized my fans had arrived earlier in the morning to tailgate," he says of his weekend gig in Wantagh, N.Y. "Here we are in New York and there are pickup trucks and cowboy hats filling out the parking lot at Jones Beach. That was beyond anything I had anticipated."

The first three shows each had more than 50,000 fans in attendance, and this coming weekend's shows, which include stops in St. Louis, Indianapolis and Cincinnati, have sold more than 60,000 tickets each. The reigning CMA Entertainer of the Year is combining his new hits -- including his current 'Mine Would Be You' single -- with a number of his hits from the past 12 years during his lengthy concert set.

Shelton is joined by Jana Kramer and Easton Corbin for the tour, which will wrap up in October. See all of his remaining shows here.