Monster Mash
The biggest night Lefty’s does. Costumes, a headliner, a food truck in the lot and a bus running people home. It has happened every October since 2022, and the date goes up on this page first.
Know before you go
- Tickets Over the counter at the shop. Online sales, if any, get announced here first.
- Age 19+
- Parking Free on site
- Doors Posted here with the headliner, before anywhere else.
- Getting home Sort your ride before the night starts — the Magic Cool Bus takes group bookings by phone.
Every Mash so far
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2026
Lefty’s 5th Annual Monster Mash — ALT CTRL + DJ IV
SAT 24 OCT · 9:00 PM
Saturday, October 24th, 2026. ALT CTRL headlines — ’90s hits with Jeremy Taggart (formerly of Our Lady Peace), Patrick Pentland (Sloan) and Andre Pettipas — plus DJ IV.
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2025
Monster Mash 2025 — Classified, and a full tent
SAT 25 OCT 2025 · 9:00 PM
The 4th Annual Monster Mash. Classified headlining, Knucklehead from Trailer Park Boys, and the Magic Cool Bus running everyone home.
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2024
The 3rd Annual Monster Mash
SAT 26 OCT
On the night Classified
The year the Mash outgrew being a party and became the thing people book the weekend around.
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2023
Monster Mash 2.0
SAT 28 OCT
Second year, and the one that proved the first was not a fluke. Eel Ground First Nation.
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2022
The first one
SAT 29 OCT
Where it started. No annual in the name yet, because nobody knew there would be another.
The years before this website. Dates and billing from the Facebook archive; if you have photos from any of them, we want them.
Monster Mash 2025
This is what the Mash looks like.
A full tent, a stage, and a costume on everybody. Two minutes from last year’s night.