[citation needed] As a young boy, Okosun spent his early childhood with his grandmother at Ibore, near Irrua in Edo State.
[4] His participation in Okwerri's group and his determination to succeed in entertainment led him to be featured in some radio and TV skits with the Eastern Nigeria Television Station.
[citation needed] Okwerri was a member of the Mbari Club, the movement started by Ulli Beier, with J. P. Clark and Wole Soyinka was a meeting spot for artists and writers.
[6] Appearances at the Eastern regional television station gained him notice from Mariam Okagbue, who bought him a guitar and encouraged him to continue working on music.
When he returned, Okosun joined the cast of Ukonu's Club, an Eastern Nigeria Television variety show where he was able to showcase his guitar playing abilities.
[6] At the onset of the civil war, Okosun and his family who were from the Mid-West and not from Eastern Nigeria had to flee the region and move to Lagos.
[8] The lineup of the Ozzidi band was headed by Okosun as lead vocalist, supported by three backup dancers, a trombone player, keyboardist, bass and trap drums.
[13] His mainstream success started to fade in the late 1980s, but he continued his career as a gospel musician under the name Evangelist Sonny Okosun.
In 1998, he started the House of Prayer Ministry, a Christian church located at Ogba area in Ikeja, Lagos state.