The complete lineup for Experts Only Festival 2026 is out, with John Summit headlining both a solo set and a back-to-back collaboration with Subtronics under the name Subjohnics. Billboard confirmed the full roster on July 28, 2026, for the two-day event running September 19–20 at Randall's Island Park in New York — the same site where the festival debuted in 2025. Organisers expect approximately 50,000 attendees across the weekend. Billboard

The festival will spread its acts across three stages: the main stage, Mirror Field, and the Pwemium Lounge. The Mirror Field stage will be surrounded by large-scale art installations and immersive activations. The Pwemium Lounge takes its name from a viral meme originated by John Summit, and will feature intimate production and curated programming framed as an indie dance experience — a smaller-room vibe inside a large-scale festival.

Phase one of the lineup, announced earlier this year, includes Prospa, LYNY, Rohaan, RoTaiki Nulight, Devault, Dreya V, OMRI., Partiboi69, Jackie Hollander, Airrica, Gabss, MADI, Soraya, and Korolova. GRiZ was also confirmed as a performer, as reported by the New York Post and EDM.com in March. The phase two additions announced in Billboard's July 28 report bring Max Styler b2b Adam Ten, Will Clarke, Broken Hill, Innellea b2b Korolova, No Static, and rSun to the bill. A "b2b" set, in dance music shorthand, means two DJs performing together, alternating tracks in real time rather than playing separately.

Produced in partnership with Medium Rare, Relentless Beats, and EMW, the festival is marketed on its official website as "NYC's largest dance music festival." The event is ages 18 and over, according to its Tixr listing, and features general-admission and VIP bars, with Don Julio Tequila La Primavera as a featured brand.

Tickets are on sale now. DICE lists prices starting at $291.74. The festival's Instagram account had previously teased that a next wave of artists would be revealed on July 28 at 12pm ET — the announcement that Billboard reported in full.

For fans of electronic music in the New York area, the festival's return to Randall's Island gives the city a major two-day dance event on a scale that few domestic promoters attempt. Fifty thousand attendees would put it alongside the largest single-weekend dance festivals in the US. The Subjohnics pairing — Summit's house and techno sensibility against Subtronics' bass-heavy sound — is the kind of cross-genre headline set that festival bookers build poster campaigns around, though whether the collaboration extends beyond this single appearance has not been announced.