Rhythm and blues, often abbreviated as R&B or R'n'B, is a genre of popular music that originated in African-American communities in the 1940s.

Starting in the mid-1950s, after this style of music contributed to the development of rock and roll, the term "R&B" became used to refer to music styles that developed from and incorporated electric blues, as well as gospel and soul music.

By the end of the 1970s, the term "rhythm and blues" had changed again and was used as a blanket term for soul and funk.

In the late 1980s, a newer style of R&B developed, becoming known as "contemporary R&B". It combines rhythm and blues with elements of pop, soul, funk, disco, hip hop, and electronic music.

In the 1990s, the genre features a distinctive record production style, drum machine-backed rhythms, pitch corrected vocals, and a smooth, lush style of vocal arrangement. Electronic influences are becoming an increasing trend and the use of hip-hop or dance-inspired beats are typical, although the roughness and grit inherent in hip hop may be reduced and smoothed out.

The Lullabeats are big R&B fans. Here are their baby-friendly takes on the genre.