Visitors who arrive in Mazatlán in the month of December can always add a concert or two to their beach vacation, thanks to the events in progress as part of the Mazatlán Cultural Festival. Most of these performances are staged in the historic, restored Angela Peralta Theater, although a few always take place in the theater’s open-air lobby or in the adjacent Plazuela Machado. Here’s what’s on the calendar this month. Unless otherwise noted, these events take place on the dates noted at 8 p.m., in the theater, Calle Carnaval near the corner of Constitucion, in Old Mazatlán. The box office is to the right of the theater entrance. Phone (Spanish only) is 982-4446. Events scheduled for the theater’s lobby or art gallery, or in the adjacent Plazuela Machado, are admission-free. The program as posted below is subject to changes and additions, so we suggest that readers check with the box office or the English language section on the website: www.teatroangelaperalta.com