When the horses are on the track at Pimlico, Maroon 5 will be on the field.  WBAL-TV reports that Maroon 5 will be one of the headline performers at Infield Fest, a concert connected to the annual Preakness Stakes Thoroughbred horse racing event.  The 137th running of the Preakness -- the first leg of racing's Triple Crown -- will take place May 19 at Pimlico Race Course in Baltimore, Maryland.  Last year's Infield Fest was headlined by Train and Bruno Mars .

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