Jon Green’s extensive work with his fellow countryman James Bay on songs like the gospel-inflected, orchestral “Us” has proven him a pop force at the stadium level. But he’s more than capable of dialing the grandiosity back, as he does on Caitlyn Smith’s achingly intimate stay-at-home anthem “Cheap Date,” and hits a sweet middle ground with Maisie Peters’ “Details,” capturing the guilt of feeling jealous of an ex’s new sweetheart.