Fallout from the Brit awards shook up the music charts on Sunday, knocking U.S. rock band Imagine Dragons off the top spot in favor of English singer/songwriter Sam Smith, data from the Official Charts company showed. Smith won the British BreakThrough Act award at last week’s ceremony, helping lift sales of his album “In the Lonely Hour” to number one from number two. By contrast, “Smoke & Mirrors,” by Imagine Dragons, last week’s number one, fell to twelfth place.