PASADENA (AP) — Sting and Paul Simon are rehearsing for their upcoming tour, a couple of longtime friends and neighbors preparing to take turns singing some of each other's biggest hits. It was Simon's idea for the tour, hatched when he came downstairs in their New York apartment building to ask if Sting would be interested. Of course, Sting told him, having first heard Simon & Garfunkel when he was a 15-year-old in England.