A popular song for Christmas, composed by Irving Berlin and memorably sung by Bing Crosby. It begins, “I'm dreaming of a white Christmas....” if (window.googletag) {googletag.cmd.push(function() { googletag.display('dcomMobileSERPDisplayTopAd-300x250'); });} else {console.error('googletag not defined, dcomMobileSERPDisplayTopAd-300x250');}