Our Great South Bay Music Festival page offers the current headliners, real-time ticket availability and an array of the best ticket prices. 11772. 4 days. Great South Bay Music Festival tickets are available for purchase! Call (888) 456-8499 today or buy online. South Bay Events is the ultimate events calendar for Manhattan Beach, Hermosa Beach, Redondo Beach and El Segundo. Found inside â Page 7247.28 Great South Bay Music Festival Fireworks ⢠Location : Waters of Great South Bay , off Bay Avenue , Patchogue , NY in approximate position 40 ° 44'45 " N. , 073 ° 00'25 â W. ( NAD 83 ) . 7.29 Mashantucket Pequot Fireworks ⢠Location ... Great South Bay Music Festival. Great South Bay Music Festival. Boston Red Sox. Go here to update it. The Great South Bay Music Festival, Long Islands largest, and longest running four-day music & arts festival, is being postponed to July of 2022.. Over a three-day weekend, the festival features performances by jazz, rock, country and funk artists. Great South Bay Music Festival. Join Festivalnet.com now to unlock additional details,