From the time immemorial, marital infidelity has seriously impacted on the sustainability of family structure and peaceful co-existence among families in Yorubaland in particular and Nigeria in general. Since family is considered as the basic unit of the society and whatever happens at the family level has a favourable or an adverse effect on the society. Therefore, a morally strong family setting is a morally strong society. Existing studies on marital infidelity, its attendant consequences and control have to a large extent been restricted to legal, dramatic, literary and modern conflict resolution methods with little reference to the use of Edì festival song as an important method of controlling this deviant behaviour in traditional marriage institution in the entire discourse. Some of the methods of controlling deviant behaviour mentioned above are geared towards using various contemporary approaches to address issue of marital infidelity associated with traditional marriage institution in the society. The methods employed in carrying out this research are the interview and the Focus Group Discussion. Our findings revealed how those with deviant behaviour of marital infidelity were exposed and dealt with in songs laced with satire. While some fled the communities out of shame, others were made to pay fine and promised not to commit such anti-social act again. Recommendations will be offered on the need for stakeholders in traditional marriage institution to be alert to their responsibilities and how such festival songs can be incorporated into the modern methods of controlling marital infidelity in order to enhance a morally stable family structure which will translate to a peaceful and a crime free society.