The word for the weekend is … eerie.

Tool, Arcade Fire and the Weeknd are among headliners at the VOODOO MUSIC + ART EXPERIENCE, back for its 18th year at City Park’s Festival Grounds. $70 and up. .

Back after a three-year hiatus, the 6t’9 HALLOWEEN PARADE Saturday night has a black cat theme and the title “6t’9 Lives.” The parade kicks off at 6 p.m. from 1020 Henriette Delille (St. Claude Ave.) and ends at Franklin and Royal.

The New Canal HAUNTED LIGHTHOUSE invites families with children 12 and younger Sunday 4 to 6 p.m., with live music, a spiderweb maze, games, storytelling, magic and candy. $3.