Southern rock legends 38 Special and country star Chris Janson are to highlight the fundraising event at Founders Park, on Plantation Key, mile marker 87. Gates open 3 p.m., music starts at 5 p.m. General admission tickets to be sold online. Limited VIP tickets are available by calling. Event proceeds benefit Casting for Cats, Big Dog Rescue Ranch and Mangrove Mike’s Everglades Education.