ABOUT KOSER:
KOSER is an alternative rock band known for fusing brooding textures with explosive energy. With roots in Philadelphia, the group draws from post-punk, grunge, and electronic influences to craft a sound that’s delightfully soulful and sonically rich. Their music balances heavy, cinematic atmospheres with razor-sharp hooks and honest lyricism. It's a journey that’s as introspective as it is intense. Formed in 2022, KOSER is made up of 5 virtuosos whose live shows channel the same energy as their recordings— moody, immersive, and sneakily powerful.
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Debut Album
OUT NOW!
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Featured On:
TV:
Fox 29, Good Day PA, NBC10
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Radio:
KYW News Radio, Q102, I105, WXPN, WMMR
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​Podcast:
The Rights To Ricky Sanchez, The Awakened Avoidant, PIGZRADIO
+more
KOSER directs a music video! Watch below.
KOSER's first video: Pants On Fire- with real pants!
Venues/Festivals:
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Some Festivals
Beardfest (NJ), Musikfest (PA), Dinah Shore (CA), Olde City Fest (PA), 2nd Street Fest (PA), Ladybug Fest (DE), Electric City Fest (PA), Boomfest (CA), +more
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Some Venues
PA- Valley Forge Casino, Philadelphia Flower Show, Main Stage Event Center, Milkboy, Silk City, The Grape Room, Johnny Brenda's... +26 more
DE- Ladybug Stage, Queen's Center
NY- Rockwood Music Hall, The Bowery... +4 more
MA- The Exchange, The Rockwell
VA- The Birchmere, The Foundry
NJ- Stokelan Winery, Starland Ballroom, Hard Rock Live, The Upstage... +14 more
CA- The Sardine, DBA256, Viper Room, Boomtown... +6 more
NPR Opener for Philadelphia, KOSER, in their entry:
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KOSER gone acoustic. Watch below:
CHECK OUT
some of KOSER's
coolest braggin' rights
"...the band comes with a unique sound that spits on classification."
LGBTQ Pride Tour Crew Members ft. Koser
Hint: There are 215+
MORE BIO
K. Koser, lovingly known as Koser, is the band's namesake! Writing songs since age nine, Koser chased the legacies of fierce, female-led bands like Paramore, Heart, and Fleetwood Mac. Battling performance anxiety and addiction made the dream feel out of reach—but she kept singing anyway. In 2018, newly sober, she entered a grueling 3-month vocal competition—the first time she’d ever performed without substances—and won. Shocked. Sober. First place. That moment lit a fire she’s never let go of.​
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Meet 2025 KOSER— a funky five piece that brings the house down. Every Single. Time. Don’t let the warm smiles and charisma fool you… these folks can go from sweet rnb to grungetacular in 2 seconds flat! It’s how they’ve played events like WMMRbq, Musikfest and Ladybug Fest; and opened for The Family Crest, Margaret Glaspy, and Fletcher! You want sax? On it. You like soulful vocals with a bite? Done. You want a comedy routine in the middle of a sick Thin-Lizzy guitar solo? Heard! Buckle up friends, you never know where this train stops next!
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