One year after selling out stadiums across the country, the Police are back for the second tour that nobody ever thought would come to pass. (It's one thing to reunite after two bitter decades apart, but the fact that they've stayed together is a real miracle.) Still, on last year's trek, the trio captured the spirit of their angular, reggae-tinged rock anthems — even if Sting couldn't hit some of the high notes. Fully rounding out the new-wave revival is musical journeyman Elvis Costello, bashing out a few classics alongside tracks from his new album, Momofuku.