Dewin are a Welsh collective formed in late 2024 by Jencyn Corp and Lefi Dafydd from Y Preselau, often joined by guitarist Mefin Hughes and percussionist Dylan Sanders-Swales. The group describes their music as “wizard-pop”, drawing on influences from jazz, folk, disco and pop, and released their debut album “Dan y Dderwen” (Under the Oak Tree) in 2026.