Sommo Festival 2025 Lineup Rumors. More artists and culinary stage announcements to come. Sommo festival is returning to cavendish in 2025 and has announced hozier as its first headliner.

“we’re thrilled to announce that sommo. Hozier will headline the third sommo festival in cavendish, p.e.i., on september 13 and 14, 2025.