If politics makes for strange bedfellows, consider two aging Rock and Roll Hall of Famers trying to figure out what to do next. On paper the idea of Sting and Paul Simon on tour together might seem strange, a random pairing driven by some unknowable desire to prove something to themselves or each other. But the two friends belong to slightly different generations - Sting is 62, Simon 72 - and somewhat different wings of rock and roll's manor house, and have never especially been considered either comrades in arms or rivals. Maybe their wives just told them to get out of the house for a few weeks. Even Simon himself called this 22-city tour, which kicked off Saturday night to a full house at Toyota Center, an "experiment." It didn't feel that way. When the house lights finally came up some two and a half hours after the show had started, following the brief encore of the Everly Brothers' "When Will I Be Loved," it felt like an idea that sympathetic artists of a similar caliber should try more often...