Bankole returned to Nigeria in 1966 and was appointed Senior Producer in Music at the
Nigerian Broadcasting Corporation,
Lagos, where he worked until 1969, after which he was appointed lecturer in music at the School of African and Asian Studies,
University of Lagos. He worked as a music educator, composer, choral conductor, performer and musicologist with independent choral groups, including the Choir of Angels (students from three high schools in Lagos: Reagan Memorial, Lagos Anglican Girls Grammar School, and the Methodist Girls High School), Lagos University Musical Society, Nigerian National Musico-Cultural Society, and the Chapel of the Healing Cross Choir, all in Lagos. He wrote much Christian liturgical music in the
Yoruba language and his compositions show elements of both traditional Nigerian music and Western classical music. He also composed theme songs for some Nigerian television drama series. One of his major late works was
FESTAC Cantata No. 4, composed for soloists, chorus, organ, orchestra, and Nigerian traditional instruments. The work was associated with the Second World Black and African Festival of Arts and Culture (FESTAC) and was premiered in 1976 at the Cathedral Church of Christ in Lagos under the composer's direction. == Style and compositions ==