The Hard Rock Rocksino Northfield Park is holding an “Open Mic Audition,” a unique, one-time-only employment opportunity, for 325 individuals with experience in the food and beverage industry to immediately join its team of rockers and work at one of four premium dining locations at the Rocksino. Superstar positions being hired include bartenders, servers, cooks, prep cooks, hosts/hostess, cashiers, dishwashers, stewards, bussers and bar backs.