Girls’ nuptial songs of the Oromoo of Horn of Africa are powerful folksong genres, but are rarely practiced today. Ethnographic data were collected and analyzed contextually, structurally, functionally, and semantically from multidisciplinary approaches: folklore, ethnomusicology, anthropology, sociology, literature, linguistic, gender, and others’ theories. They are classified into arrabsoo (insult), faaruu (praise), mararoo (elegiac/dirge), ansoosillee (bridal praise), fala (resolution), and raaga (prediction) with their distinct natures. Macca Oromoo girls compose these competitively to making weddings memorable, express themselves, inspire and encourage men for brave and appropriate actions. These genres form binary oppositions in their respective orders and enrich the culture. They also depict identities and roles of girls in creations and maintaining of culture.