With 2011 more than half over -- and the summer concert season winding down -- Billboard has tallied up the totals for the year's biggest tours so far, and a number of country artists are going strong.
U2 leads the list, with a nearly $175 million gross, with the top five rounded out by Roger Waters ($114 million), Bon Jovi ($107 million), Lady Gaga ($72 million), and Usher ($70 million). And the year's biggest country tours? Kenny Chesney (No. 9, $25 million) and the George Strait/Reba pairing (number 15, $17.5 million).