The outdoor Main Stage at UMS 2015.

(Photo: CPR)

The Underground Music Showcase returns to Denver's Baker neighborhood July 28-31. Festival organizers today announced 138 more artists who will perform over the event's four days.

Highlights from today's announcement include national acts Sunflower Bean, who Rolling Stone recently named "NYC's coolest young band," Austin, Texas, teenage rockers Residual Kid and Seattle punk band Tacocat. Colorado artists include A. Tom Collins, Brent Cowles, Ian Cooke and Inner Oceans.

Previously announced headliners for the 2016 edition of UMS include Minneapolis synth-pop group Polica, San Francisco garage rockers Thee Oh Sees, Los Angeles band Allah-Las and Brooklyn's San Fermin. 

See the full UMS 2016 lineup so far below.

  • A Shadow of Jaguar
  • A. Tom Collins
  • Adia Victoria
  • Allah Las
  • ALTAS
  • Ambit
  • Ancient Elk
  • Andy Thomas’ Dust Heart
  • Automatic Iris
  • The Baltic
  • BANDITS
  • Best Creeps
  • Blake Brown & The American Dust Choir
  • Jon Boland
  • The Bright Light Social Hour
  • Bud Bronson and the Good Timers
  • Blake Brown (solo)
  • The Bunny Gang
  • The Cabin Project
  • Casey James Prestwood and the Burning Angels
  • Church Fire
  • Cold River City
  • Confluence
  • Ian Cooke
  • The Corner Girls
  • Cowboy Dave Band
  • Brent Cowles
  • Covenhoven
  • CRL CRRLL
  • Crystal Ghost
  • déCollage
  • Dirty Few
  • Rob Drabkin
  • Dragondeer
  • Dressy Bessy
  • Dusty Heart
  • Edison
  • Emerald Siam
  • The Epilogues
  • Eros & the Eschaton
  • FL
  • Flaural
  • Fort Frances
  • Foxxes
  • Gasoline Lollipops
  • Gin Doctors
  • Great American House Fire
  • Hands of Midnight
  • Hang Rounders
  • Helvetia
  • High Plains Honky
  • Holophrase
  • Hot Apostles
  • Hotel Bar
  • Hydraform
  • I’m a Boy
  • Inner Oceans
  • Input
  • iZCALLi
  • The Jeffrey Dallet Band
  • Just Say PLZ
  • Jux County
  • Kid Reverie
  • The Kinky Fingers
  • The Knew
  • La Fin Absolute du Monde
  • Lee Fields & the Expressions
  • Leon & the Revival
  • Loki Loke
  • The Lollygags
  • LSD Bags
  • Male Blonding
  • The Maykit
  • Me Me Monster
  • Megafauna
  • Rod Melancon
  • Methyl Ethyl
  • Modern Leisure
  • Montoneros
  • Montropo
  • Morning Bear
  • Muscle Beach
  • Nasty Nachos
  • Ned Garthe Explosion
  • New Mexican
  • Nightbrunch
  • OKO TYGRA
  • Omni
  • Open to the Hound
  • orKa odyssey
  • Pale Sun
  • Palo Santo
  • Panther Martin
  • Patrick Dethlefs
  • Petals of Spain
  • Plastic Daggers
  • Playboy Manbaby
  • Plum
  • Plume Varia
  • POLIÇA
  • Ponder the Albatross
  • Porlolo
  • Post Paradise
  • Promised Land Sound
  • Quantum Creep
  • The Raven & the Writing Desk
  • Remember the Radio
  • *repeat repeat
  • Residual Kid
  • Retrofette (fka lzrwlf)
  • RipRats
  • RL Cole and the Angels
  • Shelly Rollison
  • Rootbeer and Mermantau
  • Roselit Bone
  • Rossonian
  • Matt Rouch
  • The Roxy Suicide
  • RUMTUM
  • Safe Boating is No Accident
  • San Fermin
  • The Savage Blush
  • School Dance
  • Scott Schumann
  • Set Sail
  • Shady Elders
  • The Sharrows
  • SIR
  • Slow Caves
  • Smoke & Honey
  • So Pitted
  • Sound of Ceres
  • South of France
  • Space In Time
  • Space Suits for Indians
  • SPELLS
  • Sputnik Slovenia
  • StaG
  • Staying for the Weekend
  • The Still Tide
  • The Stonewalls
  • Strange Americans
  • Strawberry Runners
  • Sunboy
  • Sunflower Bean
  • Super Bummer
  • Tacocat
  • Teacup Gorilla
  • Thee Oh Sees
  • Thick Business
  • Through the Mountain
  • Tjutjuna
  • Tom Waits for No Man
  • Tomahawk Fox
  • Tommy Freed and the Sound
  • Tommy Metz
  • Turvy Organ
  • Tyto Alba
  • U.S. Tygers
  • Ultimate Painting
  • The Velveteers
  • Tana Victoria
  • Viretta
  • Kent Washington
  • We Are Not a Glum Lot
  • Wire Faces
  • Emily Wolfe
  • YaSi
  • The Yawpers

Watch Brent Cowles' recent performance in the CPR Performance Studio below.

OpenAir hosts singer-songwriter Brent Cowles on April 21, 2016.