Watch Stella Lefty Take The Stage With Viral Single During iHeartRadio Music Festival Debut

Stella Lefty made her debut at the 2026 iHeartRadio Music Festival presented by Capital One on Saturday night (September 19). The two-night event returned to T-Mobile Arena in Las Vegas, Nevada.

Lefty, 24, delivered a special performance of her viral single, "Boston," with fans in the audience singing along to every word. The rising singer-songwriter's appearance on the main stage arrived hours after she took the stage at the House of Music, a free, immersive experience outside the arena. Earlier in the day, Lefty performed "Thinking 'bout You," "Why Wouldn't We," and "I Know I Know."

Lefty released her debut album, Long Way Home , last month. The iHeartCountry On The Verge Artist wrote in a caption on Instagram at the time that she's "so incredibly proud of these songs and I'm so beyond grateful to all my friends who helped make it all possible!!! …I hope you all love this album as much as I do. These songs are all a labor of love and many many late nights making sure these songs sound exactly how they do."

The all-star lineup of the two-day festival, hosted by Ryan Seacrest, also included BTS, Benson Boone, Cardi B, Ciara, Goo Goo Dolls, LE SSERAFIM, Kenny Chesney, Major Lazer, Muse, Snoop Dogg, The Smashing Pumpkins, WeezerandZara Larsson. Check back with iHeartRadio throughout the weekend for photos, backstage moments you won't see anywhere else, performance highlights and more.

Fans can tune in to the 2026 iHeartRadio Music Festival as the event will be broadcast live each night via iHeartMedia radio stations throughout the country across more than 150 markets. Disney + and Hulu will be the Official Streaming Destination of the festival, with performances livestreamed each night exclusively to all Disney + and Hulu subscribers.