Martha's Vineyard Festival

Last year, the Martha's Vineyard Festival featured a soulful performance by Natalie Cole. This year, the headliner is another songstress, Gladys Knight. She'll headline a bill tomorrow night that also includes Entrain, Kate Taylor, Willy Mason, the Neville Brothers, and the Boston Pops Esplanade Orchestra. One dollar of your admission goes to the town of Oak Bluffs. 3 p.m. $20 to $85. Ocean Park, Oak Bluffs. 877-655-4849. www.festivalnetwork.com/events/MV/mv.php