Hadra is an ancient musical sufi tradition from the Moroccan mountain town of Chefchaouen, exclusively performed by women. The famous hadra choir from Chefchaouen is performing an intimate concert at The Meervaart as a foretaste of the Holland Festival Proms, in which the choir will be performing in an innovative collaboration with the Amsterdam Andalusian Orchestra and the Orchestre Temsamani (Tetouan). The women are singing their own popular and poetic repertoire in the Meervaart. Texts of the songs are based on poems by Arab and Andalusian masters. The rousing rhythms and percussion gradually progress from a stately tempo to a dynamic climax.