R&B stands for Rhythm and Blues. It is a type of music that combines elements of gospel, blues, and jazz. It often has a strong beat and focuses on the vocals and lyrics. R&B music originated in the African American community in the 1940s and 1950s, and has since evolved to include a wide variety of subgenres such as contemporary R&B, neo-soul and hip-hop soul. It's popular among all ages and is known for its emotional and romantic themes.