Solid Sound returns to MASS MoCA for 2026! This year’s musical lineup features The Breeders, Gang of Four, Billy Bragg, S.G. Goodman, L’Rain, Ryan Davis & The Roadhouse Band, Sharp Pins, The Messthetics and James Brandon Lewis, Hannah Cohen, and much more. As in festivals past, it would not be Solid Sound if it didn’t feature multiple headline sets by Wilco alongside band members’ various independent and solo projects. And as previously announced, this year’s Friday set from Wilco will be a truly once-in-a-lifetime experience, with Billy Bragg joining the band to perform the songs of Mermaid Avenue.