K-pop is a form of popular music originating in South Korea as part of South Korean culture. It includes styles and genres from around the world, such as pop, hip hop, R&B, experimental, rock, jazz, gospel, reggae, electronic dance, folk, country, disco, and classical. The term "K-pop" became popular in the 2000s, especially in the international context. The Korean term for domestic pop music is gayo (Korean: ??; Hanja: ??), which is still widely used within South Korea.