Soundside Music Festival 2025 Lineup. It’s now the soundside music festival — see because it’s on the long island sound — but it’ll return to bridgeport’s.  — soundside music festival, formerly known as sound on sound, has announced its highly anticipated 2025 lineup, set to take place on september 28th and.

Your festival guide to soundside festival 2025 with dates, tickets, lineup info, photos, news, and more.  — dave grohl of foo fighters dropped a bombshell on september 10th.