R&B originated in the 1940s and contributed to the development of rock and roll in the mid-1950s. It encompasses subgenres like contemporary R&B, smooth jazz, and fusions with other genres. Key artists who helped develop the genre include James Brown, Bobby Brown, Whitney Houston, and Mariah Carey. Michael Jackson, in particular, left an immense imprint and influenced many current artists through his iconic music videos and ability to cross genres. Modern R&B artists include Chris Brown, Ne-Yo, Frank Ocean, and Justin Timberlake. The genre is closely associated with hip hop today and is presented through various media like magazines, television, radio, and increasingly, the internet.