The Opera House at Boothbay Harbor, 86 Townsend Avenue, will present The Boneheads and The Holy Mackerels together on stage on Saturday, January 18, at 7 p.m., continuing the venue’s new year tradition. Doors will open at 6:30. Advance discounted tickets, $10, are available from the box office or by calling 633-5159. Regular tickets are $15 at the door or by visiting boothbayoperahouse.com. Midcoast musicians in the bands include Steve Jones, Scott Elliot, Bob Colwell, Dick Hollis, Mark Stover and Paul D’Allesio, among others. They will play roots music, country, blues, folk and more.