Film-maker Gio Arlotta and two young musicians are on a quest to track down the legendary leader of a 1970s Zambian band

Who knew 1970s Zambia had its own thriving musical genre? This modest documentary revisits the brief, almost-forgotten history of “Zamrock” – or at least what remains of it, which appears to be very little beyond the back catalogue of its leading band, Witch. Witch’s rhythmic blend of British blues, funk, psychedelic and garage rock has aged very well, and reissues of their albums in the 2010s found a new audience, including Italian film-maker Gio Arlotta, who consequently undertook an expedition to Zambia to try to find the band, accompanied by two young Dutch musicians, Jacco Gardner and Nic Mauskovic.

There’s now a well-trodden route for such musical travelogues, laid down by the likes of Buena Vista Social Club and Searching for Sugar Man, and while this lacks the polish or drama of either of those, it’s an engaging and uplifting journey. One of the problems it runs into is a lack of surviving footage of Witch in action. Arlotta and co scour Zambia’s pre-digital archives, but the best they come up with is some unseen footage of James Brown. Nor does it help that most of Witch’s original lineup are dead.