The tambourine, introduced in Lagos in 1920 by missionaries, was integrated into jùjú because of its musical and symbolic associations. The spiritual dimension of this instrument is partly responsible for the name jùjú, which is an extension of the term used by colonialists to describe the various African traditional belief practices. Other stylistic resources of jùjú include the samba of the Brazilian community of Lagos and songs and musical instruments of the Liberian Kru sailors.
In the 1940s jùjú bands began to experiment with new musical instruments such as gangan (talking drum), pennywhistle, organ, and mandolin. The projection of Yorùbá elements and the introduction of accordion and harmonica are identified with Isaiah Kehinde Dairo (above). The rapid changes in social and political structures of the 1960s and 1970s in Nigeria were reflected in further developments.
This according to “A diachronic study of change in jùjú music” by Afolabi Alaja-Browne (Popular music VIII/3 [October 1989] pp. 231–42).
Below, King Sunny Adé, one of the performers discussed in the article.