# Koastle
Koastle is an American electronic music duo from [Orange County, California](https://www.edgepedia.org/orange-county-california), made up of Andy Mueller and Brett Beaudette, who have released music since 2021 and broke through in 2025 with their debut album In The Beginning and a first live show.[1](https://dancingastronaut.com/2025/07/koastle-release-debut-album-the-beginning/) Their sound sits in the indie-electronic and future bass space, with the duo themselves citing [Flume](https://www.edgepedia.org/flume-musician), Odesza, and [Porter Robinson](https://www.edgepedia.org/porter-robinson) as influences.[2](https://www.okeechobeefest.com/artists/koastle) By 2026 they were appearing on the lineups of major US festivals including Breakaway and Okeechobee.[3](https://www.concertarchives.org/bands/koastle)
| Key fact | Detail |
|---|---|
| Members | Andy Mueller and Brett Beaudette, Orange County, California[1](https://dancingastronaut.com/2025/07/koastle-release-debut-album-the-beginning/) |
| Genre | Indie-electronic, future bass; Soundcharts tags electro dance and stutter house[2](https://www.okeechobeefest.com/artists/koastle) • [4](https://soundcharts.com/en/artist/a0b26f19-9ed2-4367-9249-00890249d7c7) |
| First release | "Stay Close" single, 2021[5](https://music.apple.com/us/artist/koastle/1556516568) |
| Debut album | In The Beginning, 11 July 2025, 15 songs, 52 minutes, Boom Records LLC[6](https://music.apple.com/au/album/in-the-beginning/1823978672) |
| Notable festivals | Breakaway Arizona (April 2025), Illfest, Okeechobee (March 2026)[3](https://www.concertarchives.org/bands/koastle) • [1](https://dancingastronaut.com/2025/07/koastle-release-debut-album-the-beginning/) |
| Frequent collaborators | DLG., Talia Rose, Conrad., Łaszewo, Big Gigantic[1](https://dancingastronaut.com/2025/07/koastle-release-debut-album-the-beginning/) • [7](https://riverbeats.life/koastle-interview-2026/) |
| Labels | Boom Records LLC; own imprint Koastle (US); BREAKAWAY label for the 2026 single "In The Moments"[6](https://music.apple.com/au/album/in-the-beginning/1823978672) • [8](https://www.beatport.com/label/koastle-us/124175) • [9](https://www.beatport.com/release/in-the-moments/6437458) |
## Who Koastle is
Koastle are Orange County natives Andy Mueller and Brett Beaudette, working in the indie-electronic space with what the Okeechobee festival's artist page calls a "shimmery, experimental" taste inspired by Flume, Odesza, and Porter Robinson.[2](https://www.okeechobeefest.com/artists/koastle) In interviews the duo describe their sound as indie-electronic with a nostalgic and uplifting feel, comparable to Flume or Odesza, and have called it "GoPro music".[10](https://thedailyfrequency.com/interviews/koastle-talks-out-of-bounds/) AllMusic credits the project's writers as Brett Alan Beaudette, David de la Garza (DLG., a recurring collaborator) and Andy Smallwood Mueller, with Koastle credited as producer, programmer, engineer, and vocalist on their recordings.[11](https://www.allmusic.com/artist/koastle-mn0004540523)
The two came to electronic music from different corners. Beaudette has DJed since age 14 and was drawn to early dubstep by Flux Pavilion and Skrillex; Mueller has produced since 14 as a fan of Avicii and [Martin Garrix](https://www.edgepedia.org/martin-garrix).[10](https://thedailyfrequency.com/interviews/koastle-talks-out-of-bounds/)
## Formation and early career (2015–2023)
**The pair met at TCU.** Around the fall of 2015, Mueller and Beaudette officially met as students at [Texas Christian University](https://www.edgepedia.org/texas-christian-university) when they rushed the same fraternity, with a shared love of music bringing them together.[10](https://thedailyfrequency.com/interviews/koastle-talks-out-of-bounds/) The Koastle project's first releases arrived in 2021: the singles "Stay Close", "Rainbows and Butterflies (feat. Zekey)," and "Who We Are (feat. Kyle Reynolds)" all appear in the duo's Apple Music catalog for that year.[5](https://music.apple.com/us/artist/koastle/1556516568)
In 2023 the duo ran "Koastcards", a monthly series yielding one mix, one unofficial remix, and one new original song, with live mixes filmed at an aquarium and in Joshua Tree.[12](https://dancingastronaut.com/2023/06/the-radar-mixed-by-koastle/) Two 2023 tracks drew attention: "Hurricane" with Australian singer-songwriter Talia Rose, an experimental take on future bass, and "Dr. Phil" featuring Sammy Adams, which went viral after being dubbed over a trailer for the film Project X.[12](https://dancingastronaut.com/2023/06/the-radar-mixed-by-koastle/) That November they played club shows billed with Łaszewo and with Two Friends, Shipwrek, and Moonlander at The Ritz Raleigh.[3](https://www.concertarchives.org/bands/koastle)
## Discography and releases
The Apple Music catalog traces a steady singles run: "Stay Close (Live Edit)" (2022); "Hurricane", "Paradise", "STRANGERS," and "Butter" (2023); "Out Of Bounds" and "Sabotage" (2024); "Chi-Town" and "Honest" (2025, the latter dated March 7, 2025).[5](https://music.apple.com/us/artist/koastle/1556516568) A Koastcards EP followed the 2023 series in 2024.[5](https://music.apple.com/us/artist/koastle/1556516568)
**Their own imprint.** Beatport lists a label called Koastle (US) whose releases include "Chi-Town", "Life (Can't Get Much Better)", "Honest," and "Sabotage", with credits to collaborations with Talia Rose and Arden Jones.[8](https://www.beatport.com/label/koastle-us/124175) In April 2026 the single "In The Moments" appeared on the BREAKAWAY label, dated April 3, 2026.[9](https://www.beatport.com/release/in-the-moments/6437458)
The debut album's title is printed differently across sources: Dancing Astronaut's release report calls it *The Beginning*, while Apple Music and Riverbeats print *In The Beginning*.[1](https://dancingastronaut.com/2025/07/koastle-release-debut-album-the-beginning/) • [6](https://music.apple.com/au/album/in-the-beginning/1823978672) • [7](https://riverbeats.life/koastle-interview-2026/) The discrepancy is unresolved; Apple Music, as the release's store listing, gives the fullest data: 11 July 2025, 15 songs, 52 minutes, on Boom Records LLC, in the Dance genre.[6](https://music.apple.com/au/album/in-the-beginning/1823978672)
## 2025 breakout: debut album and the shift to a live show
2025 was the project's biggest year to that point. The duo released a collaboration with Big Gigantic titled "Show Me", and a month later dropped the debut album before touring in the fall.[7](https://riverbeats.life/koastle-interview-2026/) The album's singles, "Out of Bounds" with Conrad and DLG., "Chi-town" with Łaszewo, and "Veins", served as precursors, and the 15-track record features collaborations with Talia Rose, Rebecca King, and others.[1](https://dancingastronaut.com/2025/07/koastle-release-debut-album-the-beginning/) Riverbeats describes the album as a 15-track story that solidifies their sound of future bass beats and glittering synths.[7](https://riverbeats.life/koastle-interview-2026/)
**From DJ sets to a live show.** To support the album, the duo shut down all DJ performances for five months to build their first-ever live set, which debuted as part of the In the Beginning Tour in fall 2025.[7](https://riverbeats.life/koastle-interview-2026/) Their lighting director is Griffin Dennen, Mueller's childhood best friend, whose credits include [Chappell Roan](https://www.edgepedia.org/chappell-roan) and [Blink-182](https://www.edgepedia.org/blink-182).[7](https://riverbeats.life/koastle-interview-2026/) A second leg of the tour was planned for spring 2026, with festival performances at [Gem and Jam](https://www.edgepedia.org/gem-and-jam), Okeechobee, and Transcend Music Festival.[7](https://riverbeats.life/koastle-interview-2026/)
## Festival circuit: Breakaway and Okeechobee
Koastle's festival breakthrough came through Breakaway. They appeared at Breakaway Music Festival Arizona on April 18–19, 2025, on a bill with [The Chainsmokers](https://www.edgepedia.org/the-chainsmokers), Sofi Tukker, and [Gryffin](https://www.edgepedia.org/gryffin),[3](https://www.concertarchives.org/bands/koastle) and also held support slots on tour with The Chainsmokers and played Illfest.[1](https://dancingastronaut.com/2025/07/koastle-release-debut-album-the-beginning/)
The Okeechobee 2026 booking placed them on the festival's return edition: [Okeechobee Music & Arts Festival](https://www.edgepedia.org/okeechobee-music-and-arts-festival) ran March 19–22, 2026 at Sunshine Grove in Okeechobee, Florida, its first gathering in three years, and its ten-year reunion, headlined by [The Lumineers](https://www.edgepedia.org/the-lumineers), Fisher, GRiZ, and T-Pain with [LCD Soundsystem](https://www.edgepedia.org/lcd-soundsystem) and Cage The Elephant added in Wave 2.[13](https://liveforlivemusic.com/news/okeechobee-festival-2026-lineup/) Koastle appeared on the lineup in Relix's update alongside acts such as Know Good and Late Night Radio.[14](https://relix.com/news/detail/okeechobee-music-arts-festival-update-2026-artist-lineup) The exact date of their set differs by source: Soundcharts logs the Sunshine Grove show on March 19, 2026, while Concert Archives places it on Saturday, March 21, on a bill with Fisher and LCD Soundsystem.[4](https://soundcharts.com/en/artist/a0b26f19-9ed2-4367-9249-00890249d7c7) • [3](https://www.concertarchives.org/bands/koastle)
## Touring through September 2026
Soundcharts' show history traces a 2026 route beyond the festivals: the US National Whitewater Center in Charlotte on January 10, Pima County Fairgrounds in Tucson on February 4, and Sunshine Grove in March, with a date on September 25, 2026 at Lake Perris State Park in [Perris, California](https://www.edgepedia.org/perris-california).[4](https://soundcharts.com/en/artist/a0b26f19-9ed2-4367-9249-00890249d7c7) In June 2026, to celebrate the last day of tour, the duo surprised the New York crowd at Brooklyn Silo with a rare back-to-back set with Conrad., uploaded to their [SoundCloud](https://www.edgepedia.org/soundcloud) on June 12, 2026.[15](https://soundcloud.com/koastle/koastle-b2b-conrad-brooklyn)
## By the numbers
The measurable record through September 2026 is modest but specific. The debut album runs 15 songs in 52 minutes.[6](https://music.apple.com/au/album/in-the-beginning/1823978672) The most recent setlist logged at Concert Archives, dated April 12, 2026, spans 34 songs including "In the Beginning", "Stay Close", "Hurricane", "Out the Blue," and "Chi-Town".[3](https://www.concertarchives.org/bands/koastle) On the audience side, the duo reported that "Out of Bounds", made with Conrad and DLG., more than doubled their following after they began posting snippets on Instagram and TikTok.[10](https://thedailyfrequency.com/interviews/koastle-talks-out-of-bounds/)
## References
1. Koastle release debut album, 'The Beginning' – Dancing Astronaut. https://dancingastronaut.com/2025/07/koastle-release-debut-album-the-beginning/
2. Koastle | Okeechobee Music & Arts Festival. https://www.okeechobeefest.com/artists/koastle
3. Koastle Concert & Tour History | Concert Archives. https://www.concertarchives.org/bands/koastle
4. Koastle Analytics – Soundcharts. https://soundcharts.com/en/artist/a0b26f19-9ed2-4367-9249-00890249d7c7
5. Koastle – Apple Music. https://music.apple.com/us/artist/koastle/1556516568
6. In The Beginning – Album by Koastle – Apple Music. https://music.apple.com/au/album/in-the-beginning/1823978672
7. Koastle Reflects on Silencing the Skeptics, Breakout Year, and New Live Performance – Riverbeats. https://riverbeats.life/koastle-interview-2026/
8. Koastle (US) Music & Downloads on Beatport. https://www.beatport.com/label/koastle-us/124175
9. Koastle – In The Moments [BREAKAWAY] | Beatport. https://www.beatport.com/release/in-the-moments/6437458
10. That's How It Goes: Koastle On New Single 'Out Of Bounds' – The Daily Frequency. https://thedailyfrequency.com/interviews/koastle-talks-out-of-bounds/
11. Koastle – AllMusic. https://www.allmusic.com/artist/koastle-mn0004540523
12. The Radar: Mixed by Koastle – Dancing Astronaut. https://dancingastronaut.com/2023/06/the-radar-mixed-by-koastle/
13. Okeechobee Reveals Full 2026 Lineup – Live for Live Music. https://liveforlivemusic.com/news/okeechobee-festival-2026-lineup/
14. Okeechobee Music & Arts Festival Updates 2026 Artist Lineup – Relix. https://relix.com/news/detail/okeechobee-music-arts-festival-update-2026-artist-lineup
15. Koastle B2B Conrad. – Brooklyn Silo June 2026 – SoundCloud. https://soundcloud.com/koastle/koastle-b2b-conrad-brooklyn
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*Topic: Encyclopedia › Arts and culture › Music › Music scenes › Transnational genre scenes › Electronic dance music (EDM) and rave culture › Artists, groups, and people: Electronic dance music (EDM) and rave culture › Production duos and DJ duos › Bass, hard dance, and pop crossover duos*
*Initially written Sep 19, 2026 · Reviewed: Sep 19, 2026; Sep 30, 2026 · Edited: Sep 30, 2026 · Last review: Sep 30, 2026*
*Copyright 2026 EdgeChat AI, a subsidiary of Biostate AI.*
License: Edgepedia Community License 1.0, https://www.edgepedia.org/edgepedia/license