In the past few months, Bud Light has launched higher-alcohol Bud Light Platinum, killed Bud Light Golden Wheat and debuted Bud Light Lime "Lime-A-Rita," a margarita-flavored malt beverage in a can. Advertising for the nation's largest beer brand is now handled by Dentsu's McGarryBowen, which won the main Bud Light account last year, and Translation, which has Platinum and Lime. Lime's newest ads debut Friday, featuring a remix of Will Smith's "Summertime" by Swizz Beatz that was specially produced for the campaign.