
September 27–2025 (day: 28) · Bridgeport, CT, USA · Seaside Park
Soundside Music Festival (formerly known as Sound on Sound) is a premier two-day music event held along the scenic banks of the Long Island Sound at Seaside Park in Bridgeport, Connecticut. The festival is known for its unique rotating single-stage setup, which ensures no overlapping sets and allows attendees to see every artist on the lineup. It features a curated blend of indie-rock, alternative, and folk-rock performers, alongside gourmet food selections from local vendors and a variety of craft beers and cocktails. The 2025 edition, which was set to feature headliners like The Killers, Weezer, Hozier, and Vampire Weekend, was officially canceled in July 2025 due to circumstances beyond the organizers' control.
Attendees are encouraged to bring their own empty water bottles for refills at free hydration stations to support a green and sustainable event. The festival also partners with an overdose prevention nonprofit to educate attendees about fentanyl and provide Naloxone (Narcan).