Songs about the Holiday (11)
Aqua - Halloween
Ashnikko - Halloweenie
Ashnikko - Halloweenie III 7 Days
Billy Cobb - III. The Party
Danny Elfman - This Is Halloween
Mastodon - Halloween
Ministry - Every Day is Halloween
Misfits - Halloween
Panic at the Disco - It's Almost Halloween
Phoebe Bridgers - Halloween
Siouxie and the Banshees - Halloween

Songs from or about Horror movies (14) (25)
Alice Cooper - He's Back (The Man Behind the Mask)
Bauhaus - Bella Lugosi's Dead
Charlie Clouser - Hello Zepp
Dawn of the Dead - The Gonk
DJ Jazzy Jeff and the Fresh Prince - A Nightmare On My Street
Ghost - Hunter's Moon
Goblin - Suspiria
Ice Nine Kills - Hip to be Scared
Ice Nine Kills - IT is the End
John Carpenter - Halloween Theme
Johnathan Coulton - Creepy Doll
Mike Oldfield - Tubular Bells
Misfits - Scream
The Ramones - Pet Semetary

Songs from other Halloween Movies (4) (29)
Fifth Harmony - I'm In Love with a Monster
Kate Covington - Come Little Children
Ray Parker Jr. - Ghostbusters
Rocky Horror Picture Show - Time Warp

Songs about Monsters/Other Halloween Symbolism (Keep) (12) (41)
AFI - Totalimmortal
AAAAH!BBA - (Gimme Gimme Gimme) a Man After Midnight, preformed by Victor Frankenstein
Andrew Gold - Spooky Scary Skeletons (The Living Tombstone Remix)
Bobby "Boris" Picket - The Monster Mash
China Anne McClain - Calling All the Monsters
Gerard Way - Baby You're a Haunted House
Haunted Mansion - Grim Grinning Ghosts
Nick Lutsko - Spirit Halloween Theme Song
Rob Zombie - Dragula
Rob Zombie - Living Dead Girl
Sheb Wooly - Purple People Eater
Warren Zevon - Werewolves of London

Songs about Monsters/Other Halloween Symbolism (Sus) (4) (45)
The Cure - Lullaby
Echo and the Bunnymen - The Killing Moon
Ozzy Osbourne - Bark at the Moon
Toyoma Ohtani & Hunnid P - A Ghost's Pumpkin Soup

Has been used in multiple horror/halloween movies but isn't about halloween (1) (46)
The Specials - Ghost Town

Marketed as a Halloween album (5) (51)
Clipping - He Dead
Clipping - Say the Name
Chvrches - How not to Drown
Kim Petras - Close Your Eyes
Kim Petras - There Will Be Blood

Vaguely Spooky/Horror themed
The Birthday Massacre - Blue
The Cure - A Forest
Doechii - Spooky Coochie
Insane Clown Posse - My Axe
Laura Les - haunted
Misfits - Die, Die My Darling
Muse - You Make Me Feel Like It's Halloween
Oingo Boingo - Dead Man's Party

This shouldn't be on the setlist but I literally ran a poll about if it should be on the list and 12/15 people said yes (1) (52)
Yeah Yeah Yeahs - Heads Will Roll

Khias
Diamondhead - Halloween
Fandroid - 2 Spooky 4 U
Lonesome Wyatt - Halloween is Here
Matt Maxwell - C'est l'halloween
Type O Negative - Black No. 1 (Little Miss Scare All)
Zombina and the Skeletones - Nobody Likes You When You're Dead