Rhythm and blues, often abbreviated as R&B, is a genre of popular music that originated in the African American communities in the 1940s, characterized by a strong backbeat and a focus on the rhythm. It combines elements of jazz, gospel, and blues, and it played a significant role in shaping rock and pop music by influencing artists and styles that followed. R&B has evolved over the decades, contributing to various music forms and maintaining its relevance in contemporary music culture.