House music originated in Chicago in the 1980s within the African American community. It evolved from genres like gospel, soul, jazz and funk, as well as Latin salsa. House music developed as a way for oppressed groups like African Americans, gays, and Latinos to build community through dance. It spread from Chicago and New York to the UK, where large raves in the countryside became popular in the 1990s. In the 21st century, new DJs and sounds emerged from places like Sweden, Atlanta, and Detroit, bringing house music into the mainstream through artists like Avicii and Calvin Harris. Ideologically, house music videos often portray themes of love, friendship, happiness, and enjoyment of life through dance.