The Ubbi Side: House and Techno
The house half of this undercard runs wider than the label suggests. It has a singer, two Latin tech house producers, a classical violinist and three producers folding trance into harder techno.
Kaleena Zanders is a vocalist first, with a big diva style she traces back to Robin S. and Sonique, and she started out in childhood musical theater and the San Jose Children's Choir. Her debut album, Anything Goes, came out on Helix Records on May 15, 2026: seven tracks running from UK garage bounce to stutter house, with Shift K3Y, Bipolar Sunshine and Hayley May as guests. Over the 2026 festival run that followed, from Electric Forest to Beyond Wonderland at the Gorge, she said her sets were heading toward jungle, UKG and harder material, so expect more edge than the album has.
ROMMII has played Ubbi Dubbi before: Magnetic's 2024 rundown of his festival sets listed it. This time the San Diego producer, Mexican-American and pronounced Row-mee, splits the decks with Los Angeles' Juos, and both bring Latin rhythm into house. Juos folds traditional Latin elements into tech house on labels including Dirtybird, Trace Amounts and Divided Souls, and released "Side Man" with Techno Tupac in August 2025. ROMMII's early records ran soft, like the emotional-house single "Deep End" with Dev; newer ones such as "Baile Bounce" and "Jungle Gem," with Valentino Khan, lean Latin. Juos was also booked to support headliner Deorro at Red Rocks in October 2026.
The live violin is the draw. Mariana BO, from Culiacán, Sinaloa, is a classically trained violinist who plays over hard techno, neo-rave and trance, and she's the only one of these ten with a DJ Mag Top 100 placing, No. 91 in the 2025 poll. That year she played Tomorrowland and EDC Mexico while rehearsing a sold-out show with Mexico's Filarmónica de Querétaro, a project she told DJ Mag connects her classical training to her DJ career. "Vivaldi," her collaboration with Timmy Trumpet, has passed 24 million Spotify plays.
Two producers from northern France, both pulling '90s rave into hard techno from different ends. Panteros666 is Victor Watel, a jazz-school drummer who swapped the kit for a drum machine, had his first success in 2013 and made "Clear" with Woodkid two years later. His sets now lay trance melodies and Eurodance edits over hard techno kicks; "Chasing Dreams" leans on Robert Miles. Pawlowski, from Lille, performs behind a scarf, names horror scores and Daft Punk in nearly the same breath, and broke through with "Demonic Dimensions." His first EP for Charlotte de Witte's KNTXT label, led by "Space Odyssey," arrived in December 2023.
Zorza is one of the producers shaping hyper-techno, which puts pop and hyperpop vocals over hard kicks and trance leads. The Toronto DJ released "Everything U Need" on Big Beat Records in 2024, then made SPF INFINI: ZORZA, a 55-minute mixed album of new music that opened the SPF INFINI series in 2025. She has played Dour, Verknipt and Boiler Room x Teletech in Manchester, and back home she runs 4ever, a party for hyper-techno, hard dance and trance acts. If the Panteros666 b2b Pawlowski set works for you, she's the natural follow-up: she has toured with Panteros666, and the two released "Ultra Ray" together in 2023. Her debut album, internet niche fame, came out in October 2026.
Somewhere in Between
One producer on the undercard has already spent years on each side of the split.
Rad Cat, San Diego's Christian Ariza, came up in future bass. After hearing his remix of "IDFC," blackbear pulled him into the Beartrap collective; "Alright" later hit No. 1 on HypeM, Nintendo used "All Good" in a 2020 Switch Lite commercial, and "Diamond," with Gloria Kim, came out on Steve Aoki's Dim Mak in 2021. He makes house and garage now, though UFO Network called his August 2025 single "Lose Control" a high-impact bass house track, which is roughly where this festival's two halves meet. His track "Reason" became a Counter-Strike 2 music kit in 2024, and he has toured with Knock2.
The Dubbi Side: Dubstep
The bass half of the undercard is thin. By our genre count, 17 of the 22 undercard acts with a confirmed genre play house, tech house or techno, four play dubstep, and one plays bass house. Bass weight sits higher up the bill instead, in eight of the 13 major-tier slots. So the four picks below are the whole dubstep undercard, and three of them come out of the Southern bass scene.
This pairing wasn't invented for Fort Worth: the two were billed back-to-back on a Tape B show in Atlanta on Halloween 2026, and share a bill again in Indianapolis in November. Flozone, from Florida, describes his dubstep as dirty-south influences run through modern bass, and called his 2024 EP simply South. He released "Lose It" with Liquid Stranger in 2025 and has had support from TVBOO, who is also on this lineup. STVSH, Atlanta's Nathan Lienau, pairs hip-hop influences with gritty, detailed sound design. He has released on UKF, played Red Rocks and Lost Lands, and put out the FRICTION EP on Zeds Dead's Deadbeats label in May 2026.
Zen Selekta is Nicole Barton, from Atlanta, and her name is a split of its own. When she played two nights at Meow Wolf in Denver, night one was "Zen," the deeper, more spiritual material, and night two was "Selekta," all mashups and fast transitions. The global textures in her low end come from her Spanish heritage, meditation, books and film, while "ATL HOE" is built on a chant Atlanta crowds use at shows. She has played Electric Forest, Lost Lands and GRiZ's Seven Stars and toured with Mersiv and Inzo. In October 2026 she released "All Massive," her debut on Deadbeats, the label behind STVSH's latest EP.
The Greensboro, North Carolina producer came up the way plenty of dubstep producers do, through the label circuit: early records on Disciple Round Table, Buygore, Odio, Interval Audio and Rude Service. EKM filed his track "HYPERKNIFE" under neo-dubstep. The step up since has been Monstercat, which released "onlybmyself" and "Street Talk," and he has a collaboration with Barely Alive, "Sky High." His dates this winter run from Petit Bain in Paris in mid-November to Ductwork in Houston in February.
The oddest résumé on the bill. Richard Finger is two anonymous producers who say they've each been making music for more than a decade, and who present the project as, yes, a finger. They surfaced on SoundCloud in early 2024, kept posting SoundCloud-only dubstep under nonsense titles, and with about seven songs out were booked as the first opener on Tape B's Red Rocks headline show in fall 2025, their first live set. Levity later remixed "Nobody Can Stop Richard Finger," still the only track on their Spotify page, and their first collaboration, "EAZY MF FINGER" with EAZYBAKED, came out in June 2026.
Also on the Undercard
Ten picks leave out several acts with a strong case. Luca Agnelli has run his Tuscan label Etruria Beat since 2010 and released on Drumcode and Soma; when Adam Beyer asked him to remix Moby's "Porcelain," he planned it in his head on a family vacation and finished it in three days. elMefti, Syrian-born and based in Germany, shares much of his hard techno catalog with Holy Priest, who is also on this lineup. Jay Pryor was one of the producers on "Just Hold On," Louis Tomlinson's single with Steve Aoki, and his own "All This" has passed 49 million Spotify streams. And the one bass house act, Bradeazy, rebuilt Crazy Town's "Butterfly" for the club in 2026.
Ubbi Dubbi 2027 runs Friday and Saturday, April 23–24. In 2026, gates opened at 3 PM both days with music scheduled until midnight; the 2027 hours aren't published yet, and neither are the day split, stage assignments or set times for these ten. We'll add them to every artist page and to our set times page once the festival posts them.
For the full picture, browse the complete Ubbi Dubbi 2027 lineup, read our guide to who to see, or start with the genre guide if hyper-techno, stutter house and dirty-south dubstep are new territory.