Bruno Mars closed out BBC Radio 1’s Big Weekend at Ebrington Square in Londonderry, Northern Ireland in 2013 with a headline set that left no question about his status as one of the finest live performers of his generation, running through a hits-packed setlist that moved from the explosive opening of “Locked Out of Heaven” through the irresistible funk of “Treasure,” the raw emotion of “When I Was Your Man,” and the crowd-wide singalong of “Just the Way You Are,” all delivered with the kind of precision choreography, tight musicianship, and natural charisma that make Mars and the Hooligans genuinely impossible to look away from.