In one of the odder promotions to mark Tax Day, Hard Rock Cafe is giving people a chance to sing for their supper.

From 5 to 7 p.m. Tuesday, April 15, any guest who performs a complete song on Hard Rock Cafe's stage in front of the entire restaurant will receive a free dinner entrée from Hard Rock's new menu.

Among the new menu items: Grilled Vegetable Sandwich, Arugula Salad with Shaved Marinated Chicken or Fiesta Burger (or Veggie Burger).

More details here.