Speech Debelle, Bellowhead, Bruce Cockburn, Seth Lakeman, The Imagined Village, Thomas Traux, Franz Nicolay. The music, art, comedy and literature festival, Greenbelt hits its thirty-ninth birthday this with a four-day line-up that includes the soulful, jazz-inflected hip hop of SD, as well as more folky acts such as exhilarating big band Bellowhead. Many festivals are family-friendly, but Greenbelt really caters for everyone, even offering a single parent family ticket, which allows entry for one adult and two children for a reduced £165.