Marina and the Diamonds and Charli XCX team up for duet, tour

Pop fans looking for an experience slightly edgier than KIIS-FM's annual Wango Tango concert -- which is to bring Bruno Mars, Maroon 5 and a host of other Top 40 types to Home Depot Center on Saturday -- should make their way that evening to the Shrine Expo Hall, where Marina and the Diamonds are scheduled to play alongside Charli XCX.