Kellin Quinn Bostwick (born April 24, 1986) is an American singer and musician. He is the lead vocalist and keyboardist of the rock band Sleeping with Sirens. He is known for his distinctive, high-pitched vocals and for collaborating with other artists, as well as the SEGA Sound Team on the game Sonic Frontiers (2022). Some of his best known collaborations are on the tracks "King for a Day" with Pierce the Veil, and "Love Race" with Machine Gun Kelly. In 2025, Quinn released A Collection of Greetings, his debut studio album under the solo project Haunted Mouths.
Career
Quinn was the vocalist of the band Closer 2 Closure with guitarist and songwriter Titus Lockard from 2005 to 2008, and also auditioned to become the vocalist for Dance Gavin Dance before joining Sleeping with Sirens in 2009. He is also the former vocalist of the Michigan band For All We Know.
The band released their first album in 2010, With Ears to See and Eyes to Hear through Rise Records, which sold 25,000 copies, and reached number seven on the Billboard charts.
Sleeping with Sirens released a single in celebration of Halloween, "Dead Walker Texas Ranger" on October 22, 2012. Quinn participated in the music video for "King for a Day" by the band Pierce the Veil, released in 2012. The single went gold in 2014 and platinum in January 2020. Quinn also collaborated with New Zealand band Written By Wolves on their Collab Project in 2021, sharing lead vocals on the song "Help Me Through the Night".
In 2020, Quinn started a solo side project with producer Cameron Mizell called "Downer Inc" and released a six-track EP called "Whatever This Is".
Quinn appeared on the Sonic Frontiers soundtrack in 2022, acting as lead vocalist for four of the songs on the games soundtrack. Quinn also appeared as a special guest at the September 30, 2023 Sonic Symphony where he performed some of the songs from the soundtrack including "Undefeatable" and "Break Through it All".
Quinn owns his own clothing line, "Anthem Made", and is the founder of "Dreamer Development Group", a support network for aspiring artists like Manic, and Roseburg.
Kellin Quinn collaborated with The Frst on the track “Bruce Lee,” released on June 28, 2023, and “Love In 3D,” which was released on November 1, 2024.
On January 16, 2025, Quinn announced his solo project, Haunted Mouths, and released the single "Further Til We Disappear". His debut studio album under Haunted Mouths, A Collection of Greetings, was released on February 14, 2025. Quinn described the record as a "love letter to [his wife]".
Personal life Quinn married his girlfriend Katelynne in 2013. The couple have a daughter, and two stepsons from his wife's previous marriage.
Discography
Solo albums
A Collection of Greetings (as Haunted Mouths) (2025)
Other works Year Song Album Artist2008"You Are The Reject Clone"Unreleased EPSycAmour2010 "The Amazing Atom" The Secrets to Life At the Skyline "There's a Situation @ the Shore" (feat. Kellin Quinn & Jesse Lawson) Exotica EP Lakeland "In the Face of Death" Crashing EP The Last Word2011 "Airplanes Pt. 2" (feat. Kellin Quinn & Tom Denney) Single We Are Defiance "The Dying Hymn" My Devil in Your Eyes The Color Morale "Bring On the Empty Horses" A Hope Remains Call Us Forgotten "Once Upon a Time in Mexico" Demo Version Cascades2012 "We Fight Fail" Aerolyn Aerolyn "Miles Away" Challenger Memphis May Fire "Closer to Becoming a Killer" When the Way Is Forgotten She Can't Breathe "King for a Day" Collide with the Sky Pierce the Veil "The Surface Beneath" Single Avera "Building Coral Castle" Morals EP The Words We Use "Miles Away (Acoustic)" Single Memphis May Fire2013 "Swing Life Away (Rise Against cover)" Black Flag Machine Gun Kelly "Swing Life Away (Acoustic)" (feat. Kellin Quinn & Jesse Lawson) Single Machine Gun Kelly "500mL" Morla and the Red Balloon Time Traveller 2014 "Fight Back" Single Lions Lions2015 "Paper Planes" 35xxxv One Ok Rock "The Chase" Nerve Endings Too Close to Touch "Into the Rest" Into the Rest EP Avion Roe2016 "Keep Swingin'" Youth Authority Good Charlotte "Ma Chérie" Boom Boom Room (Side A) Palaye Royale2019 "Nobody's Happy" Single Fossil Youth "RIP'" Indie Baby Roseburg "Filthy'" It Begins EP Ghost Kings "The Bottom'"Single YULTRON "Wolf in Disguise" It Comes in Waves2020 "Into the Dark" "Brand New Vision" Point North "Upside Down" New Empire, Vol. 1 Hollywood Undead "Rose Colored Catastrophe" (feat. Kellin Quinn & HJ) Single Dear Me "Time Bomb" Resilience Halflives "i luv that u hate me"Single Story Untold "I'd Rather Be Dumb" Marlhy "Someone Else" Loveless "Drug" Lonely Spring2021 "Last Time" Sunday Friend "I Don't Mind" The 12th Human "Nightmare" vibes. Karma Kids "Time Bomb"Single Paul Bartolome "What Isn't Here" DVDDY & Caslow "Mercy" Heaven Is A Feeling, Hell Is A Place EP Echoes "Wrong"Single Five AM "Love Race" Machine Gun Kelly "Eating Me Alive" 1692 Oh! The Horror "Overdramatic" Bored In America Exit "Help Me Through The Night "Single Written By Wolves "The Reason" 1996Montana "Messy" Conquer Divide "No Fear" Amber Liu"1 Thing"Sophie Powers "Letters'" Paleskin"The Only Ones"Black Sky SunriseCrashing Atlas "Never Ending Nightmare" This is Your Sign (Part 1) Citizen Soldier "Love You Like I Used To" Single 7evin7ins2022"MESS" GARZI"How Could You Do This To Me" Suckerpunch Maggie Lindemann"Reticent" You Miss Everything Colony Collapse"Undefeatable" Sonic Frontiers Original Soundtrack: Stillness & MotionTomoya Ohtani"Find Your Flame""Break Through It All" "In Extremis" Pieces EP Barbie Sailers "Atom Bomb" Single PRETTY HAVØC"Conversation (Kellin Quinn Variant)" Jack the Underdog "Inner Beauty"Abyss, Watching Me2023"How It Ends" Cevilain"Everything But Faith" Colorblind"Love//Hate" Diary of a Depressed Creative Kala"Live and Let Die" Single Roseview"Underneath My Skin" The Silver Line ONI"Four Leaf Clover"SingleDown And Out"Zombie" Maybsomeday"Bruce Lee" This Never Happened The Frst"Lonely Together"Single BUNNY "Fractured" Phantom Pain EP Last Night of Solace"I'm Here – Revisited" Sonic Frontiers Expansion Soundtrack: Paths Revisited Tomoya Ohtani"Feasting on Vultures" Fractured Paradise Seventh Day Slumber"You're on Your Own, Kid" Single The Frst"FVKD" NateWantsToBattle2024 "Yeah!" (feat. Kellin Quinn & Hyro the Hero) Like a Storm"Love In 3D" (feat. Kellin Quinn, Craig Owens & Aaron Gillespie) This Never Happened The Frst"Obey" Atmospherics Hands Like Houses"Paradigm" Donefore Donefor"Sentence" (feat. Kellin Quinn & Lil Lotus) Despised Icon weknewnothing"Forever & Always" Downward Spiral CZYK2025 "cyclical reality" Single playd3ad "Found" Home EP Live Lost "Speak Soft X" Never Happy, Ever After X As It Is"Upside Down"SingleKeeper "Burning Bridges" N4T! "Mirror Soul" From First to Last "Always the King" X's for Eyes The Red Jumpsuit Apparatus2026 "RX Regicide" Synthetic Sympathy Defying Decay "sleep paralysis" Single Can't Touch the Bottom "Liminal" Midnight Skies "Lamb" Julia Wolf "One Last Shot" (feat. Kellin Quinn, Lil Used & Lil Lotus) Carlo and Friends "I'm Bored x" Waldo
References