Connecticut’s biggest music festival is back for 2025! This September, the Soundside Music Festival will return to Bridgeport’s iconic Seaside Park, bringing an incredible lineup of Grammy-nominated artists, rising stars, and crowd favorites.
Previously known as Sound On Sound, the festival has evolved into a staple of the Northeast music scene. Each year, it draws thousands of fans for a weekend of diverse performances and memorable experiences.
Set against the scenic backdrop of Long Island Sound, Soundside 2025 promises to be a can’t-miss event for music lovers from Connecticut and beyond.
The Soundside Music Festival lineup has finally been released, and we have all the details you need to know for the 2025 edition of this popular fest.
Who’s Playing Soundside Music Festival?

This year’s headliners include The Killers, Hozier, Vampire Weekend, and Weezer, ensuring a mix of rock, indie, and soulful ballads. Other standout acts like Djo, Japanese Breakfast, Remi Wolf, and Chelsea Cutler add fresh, exciting flavors to the weekend’s performances.
With stages hosting both established chart-toppers and up-and-coming artists, attendees will find something for every musical taste.
You can see the full Soundside Music Festival lineup below:
Saturday:
- The Killers
- Weezer
- Djo
- Japanese Breakfast
- The Last Dinner Party
- Inhaler
- Rachel Chinouriri
- Wild Rivers
- Hollow Coves
- Dipsea Flower
Sunday:
- Hozier
- Vampire Weekend
- The Backseat Lovers
- Remi Wolf
- Chelsea Cutler
- Alex Warren
- Gigi Perez
- Brenn!
- Vundabar
Soundside Music Festival Dates
Mark your calendars for the weekend of September 27-28, 2025. Soundside will take place at Seaside Park, a picturesque coastal venue known for its breezy waterfront views and open green spaces. The event’s layout allows fans to wander between multiple stages, grab a bite from local food vendors, and soak in the late-summer atmosphere.
Soundside Ticket Info
Presale tickets go live on April 3 from 10 a.m. to 11 a.m., offering early birds the chance to snag passes at the lowest price. Public sales begin later that day, with 1-day and 2-day ticket options available. Be sure to act quickly—this festival is known to sell out fast!
Whether you’re a Connecticut local or planning a road trip to the state, Soundside Music Festival is the perfect way to end your summer on a high note.
With an outstanding lineup, a beautiful venue, and an unbeatable atmosphere, this is the ultimate excuse to gather your friends, pack a picnic blanket, and enjoy a weekend of music under the sun.