Rhythm and Blues, commonly abbreviated as R&B, is a genre that emerged in the post-World War II era as a powerful blend of blues, jazz, gospel, and boogie-woogie traditions. The term was coined by Jerry Wexler at Billboard magazine in 1949 as a replacement for the discriminatory label "race music," reflecting the cultural shift that followed the Great Migration of African Americans from the rural South into major northern urban centers. These new urban communities became crucibles of creativity, transforming rural musical traditions into electrifying, danceable forms of expression. Characterized by its driving shuffle rhythm built on triplet-based patterns, R&B drumming is anchored by a strong backbeat on the snare drum (typically beats 2 and 4), a swinging eighth-note pulse on the hi-hat, and a walking bass line that propels the groove forward. Tempo ranges widely: slower blues ballads sit comfortably between 60–80 BPM, while the energetic "jump blues" style pushes tempos from 120 BPM up to 176 BPM or beyond. The genre lives in 4/4 time, with the shuffle feel being the heartbeat of the style. R&B serves as one of the most foundational genres in modern popular music. It is the direct ancestor of soul, Motown, funk, and rock and roll. Key instruments include the drum set, electric guitar, piano, bass, and a horn section (saxophone and/or trumpet). Legendary drummers like Milt Turner (Ray Charles), Benny Benjamin (Motown/Funk Brothers), Bernard Purdie, and Al Jackson Jr. defined the sound that shaped generations of music. From the clubs of Memphis, Detroit, and New Orleans to stadium tours worldwide, the Rhythm & Blues groove remains a cornerstone of musical expression.