RIDDIM REGGAERiddim is the Jamaican Patois pronunciation of the English word "rhythm". In reggae, dancehall, calypso, soca, grime, and reggaeton parlance it refers to the instrumental accompaniment to a song. These genres consist of the riddim plus the "voicing" (vocal part) sung by the deejay. The resulting song structure is distinctive in many ways. A given riddim, if popular, may be used in dozens—or even hundreds—of songs, not only in recordings but also in live performances.