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Immortal Sÿnn
Halloween with Dirty Side Down and Immortal Sÿnn
Trailside Saloon
10360 Colorado Blvd
Thornton, CO 80229

Free admission
Event websiteAbout this concert
Dirty Side Down and Immortal Sÿnn are hosting the annual Halloween Party at Trailside Saloon in Thornton, CO (104th & Colorado Blvd.) on Halloween - Friday October 31st, 2025.
8PM to Midnight.
No Cover
21 +
Trailside Saloon
10360 Colorado Blvd.
Thornton, CO 80233
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Hellspawn Tour 2024 T-Shirt
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Ladies’ Muscle Tank w/ Black Logo
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$39.00 USD

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Unisex Hooded Sweatshirt w/ Logo
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Immortal Sÿnn Logo - Unisex T-Shirt -...
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Immortal Sÿnn Biography
Immortal Sÿnn is a heavy metal band from Denver, CO. In a sea of modern cookie-cutter acts, the band tries to retain a more familiar and old school sound that propelled bands of the 70s and 80s to superstardom. Taking their cue from thrashers such as Exodus and Megadeth, as well as NWOBHM legends like Judas Priest and Motörhead, Immortal Sÿnn creates a perfect mixture of speed and grit, but can also knock you out with mid-tempo riffs from hell.
The band has shared the stage with acts such as Hinder, Accept, Raven, Exmortus, Flotsam and Jetsam, Extinction AD, Winger, Firehouse, Loudness, Great White, L.A. Guns, Ratt, Warrant, Tommy Vext, Saliva, Faster Pussycat, Slaughter, Hammerfall, Delain, and many more!
Soon after recruiting former Grim Reaper and Grip Inc. bassist, Chaz Grimaldi, the group signed a distribution deal with famed NWOBHM label, Heavy Metal Records, who released the band's Hellspawn EP in August 2024.
Immortal Sÿnn’s goal is to bring old school metal to the masses, and to show the world that the sounds of yesteryear are still alive and well.
Read MoreThe band has shared the stage with acts such as Hinder, Accept, Raven, Exmortus, Flotsam and Jetsam, Extinction AD, Winger, Firehouse, Loudness, Great White, L.A. Guns, Ratt, Warrant, Tommy Vext, Saliva, Faster Pussycat, Slaughter, Hammerfall, Delain, and many more!
Soon after recruiting former Grim Reaper and Grip Inc. bassist, Chaz Grimaldi, the group signed a distribution deal with famed NWOBHM label, Heavy Metal Records, who released the band's Hellspawn EP in August 2024.
Immortal Sÿnn’s goal is to bring old school metal to the masses, and to show the world that the sounds of yesteryear are still alive and well.
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