They Can Play. Can They Play Nice? In a high-ceilinged studio at the Lions Gate film complex earlier this month, the Police were rehearsing for a very public first gig: opening the Grammy awards broadcast last Sunday with their 1978 hit "Roxanne" before announcing a world tour the next day. Sting, 55, on bass; Andy Summers, 64, on guitar; and Stewart Copeland, 54, on drums, were working through a list of two dozen songs. For the first time in decades the Police would be back together for more than one night. "I've trapped myself back 30 years," Sting said...