
Songs often emphasize spiritual messages of tolerance, faith, justice, and universal love. Many songs contain multiple layers of meaning, and can be interpreted as social or political commentary. Some rasin songs are based on prayers directed to particular loa, or gods, while others may be ballads relating to Haitian mythology. Songs can speak to traditional Vodou themes such as spying and betraying, feeling lost or estranged, the need for judgement and justice, or the urge to reconnect with an ancestral homeland. Most rasin song lyrics are written in Creole and often incorporate traditional Vodou ceremonial lyrics or poetry. Rasin instrumentation can include a variety of drums (including distinct rada and petro styles), rara horns, electronic keyboards, electronic drums, electric guitars, an electric bass, one or more vocalists, and other percussionists.

On top of the basic horn and drum rhythms, melodies are layered that include structure from rock and roll and jazz. The Haitian Vodou musical tradition includes "cool" rada rhythms often associated with Africa and the "hot" petro rhythms that speak of a New World, and rasin bands incorporate both styles in their music, although rarely in the same song. Rasin bands combine the Vodou ceremonial and folk music traditions with various musical styles.

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