Hip-hop is a popular form of entertainment that has become pervasive in the music industry and beyond. It originated in African-American communities in New York City during the 1970s and has grown to influence multiple genres of music across many countries around the world. As an art form, hip-hop culture encompasses elements such as rap, DJing/scratching, graffiti, breakdancing, and beatboxing. Beyond its musical aspects, though, hip-hop also includes fashion styles and language trends that have been adopted by people from all walks of life.

The primary focus of hip-hop is rapping (also known as MCing or emceeing). Rapping involves delivering lyrics over beats or instrumentals using techniques like flow (the speed at which you deliver your rhymes), cadence (how rhythmic they sound), and intonation (using variations in pitch to emphasize certain words). These skills can take years to develop, but when done well, they make for captivating performances that draw listeners in. Rappers often address topics related to their own experiences growing up in tough urban environments while also touching on social issues like racism or poverty.

In addition to lyrical content, there are other key components found within hip-hop culture. Production values refer to how good a track sounds; turntablism refers to playing records with two turntables; sampling refers to taking pieces from existing recordings; scratching means manipulating vinyl records with a needle arm; looping allows for repeating sections so DJs can mix different songs together seamlessly. Breakdancing consists of intricate footwork combined with acrobatics performed usually against another dancer or group competing against each other—it was born out of funk dance moves practiced by b-boys who would gather at parties throughout NYC boroughs during the 70's and 80's before becoming recognized worldwide today.

Finally, there is graffiti, which started off mainly as illegal tagging on subway cars but eventually gained widespread acceptance among artists looking for ways to express themselves through visual media outside traditional gallery settings.

These days, we see mainstream celebrities adopting various elements associated with hip-hop culture, whether it be sporting flashy jewelry pieces designed by top designers or donning streetwear brands made famous largely due to their presence within rap videos, albums, artworks, etc. It's fair to say this once-underground genre has gone global, reaching millions, if not billions, of fans worldwide, making it one of the most influential forms of entertainment ever created.