Tambú is an expression of the black slaves in Curaçao, and - after the liberation in 1863 - of the Afro-Curaçaoan workers and field workers from the lowest social class. The music of the tambú knows two instruments, the tambú a one-skinned drum, and an iron idiophone, the ‘heru’. The tambú is the central instrument and is played by a male person, while traditionally the singing was done by women. The social phenomenon tambú is the result of a process of selection and fusion of rites, religions from different West African cultures and the corresponding singing, dancing and musical expressions in colonial Curaçao of the seventeenth and eighteenth centuries (Rosalia 1997: 40-41).