In America, mostly of us only know Scottish duo the Proclaimers for “I’m Gonna Be (500 Miles),” the driving, heavy-accented 1988 ditty that didn’t become a big alt-rock radio hit until it showed up on a movie soundtrack years later. But Coldplay apparently just figured out that they love the Proclaimers, and they showed that love by covering a different Proclaimers song in a recent visit to BBC Radio 2’s Piano Room.