When his education ended, he ventured out to make what money he could by getting gigs with the movers and shakers of the Beninese music scene, namely Orchestre Poly-Rythmo as well as the Black Santiagos. Absorbing and learning the intricacies of music composition, Rob returned to Ghana where he began to write his own songs and eventually sought the backing of a band, specifically one which possessed horns.
In 1977, a young Rob travelled to the city of Takoradi in western Ghana to approach an army band named Mag-2 whom he had seen perform in Accra. Mag-2 had an entire section of its ensemble dedicated to horns and some of the sophisticated music equipment available in Ghana at the time - Hofner guitars, Yamaha keyboards and the like.
Mag-2 was essentially filled with the best elements of 'The Parrots,' a highlife band in which Amponsah was the lead guitarist. Mag-2 backed the Ghanaian sensation on two albums both of which were recorded at Essiebons studios in Accra. Despite Rob's training and musical education, Amponsah was responsible for the vast majority of the compositions, such as building the chord progression and arranging the horns that Rob craved. Rob would even wait for the Mag-2 maestro's cue to begin singing.
Despite early successes, a once-unflinching interest in Afrobeat began to wane by the early 1980s and Disco Boogie rapidly became the vogue style around which label owners and music producers sought to capitalize upon. The style Rob had shaped his career around was in decline and an adequate income consequently became a major concern, forcing him to travel to Hamburg, Germany