Rhythm and Blues music, or R&B music, was originally termed "race music" and basically included any form of music intended for black audiences. A combination of jazz, gospel, and blues, the term "R&B" was originally coined in the late 1940’s in the United States to be used as a less offensive marketing term. While R&B music has evolved over the years to spawn contemporary genres of R&B sounds, the original genre focused on boogie rhythms and included such famous acts as Bo Diddley and Chuck Berry. The end of World War II produced a surprising call for race music, and the R&B music genre took off as a result.