The Great South Bay Music Festival returns to Patchogue, New York from July 23-26, 2026, featuring an impressive lineup of rock, reggae, blues, alternative, and bluegrass artists. Headliners include alternative rock veterans The Used, ska punk legends Sublime, indie rock favorites My Morning Jacket, and southern rock jam band Gov't Mule. The four-day festival showcases 33 artists from the United States and United Kingdom, offering music fans a diverse multi-genre experience. With its eclectic mix spanning from heavy alternative sounds to laid-back reggae vibes, this Long Island festival promises something for every rock and roots music enthusiast.

Great South Bay Music Festival is a four-day standalone music festival.