Essaouira has an unusually deep musical identity. Gnaoua — a hypnotic, polyrhythmic tradition brought to Morocco by sub-Saharan African slaves centuries ago — survived here and evolved into one of the country’s most distinctive living art forms. You will hear it drifting from cafés along Rue Mohammed Ben Messaoud, played on the guembri (a three-stringed bass lute) and accompanied by metal krakeb castanets.
Every June, the city hosts the Gnaoua and World Music Festival — four days of free open-air concerts on stages set up inside the ramparts and on the main square, drawing international jazz, blues and roots artists alongside Moroccan masters. If your trip overlaps with late June, this alone justifies the detour from Marrakech.
Outside festival season, you can catch informal Gnaoua sessions in the evenings at La Maison des Gnaoua near Place Moulay Hassan — no ticket required, but a generous tip and the purchase of a mint tea is the right etiquette.