The Onset Beach Jazz Festival presents an evening of mystery. The organization is hosting a Masquerade Ball on Saturday, April 23 at the Seaport Inn & Marina, located at 110 Middle Street in Fairhaven.

Dress in your best evening attire. Yes, masks are required. Entertainment will be provided by DJ Les Correia and Mardi Gras style cuisine will be served. Tickets cost $20. Doors open at 7:30 p.m.

Proceeds from the event will benefit the Second Annual Onset Beach Jazz Festival, scheduled for July 23.

For more information or to get tickets, call 508-317-9388 or e-mail onsetbeachfestival@gmail.com.