B-boying or breaking, also called breakdancing, is a style of street dance that originated primarily among Puerto Rican and African American youths (many of them former members of the Black Spades, the Young Spades, or the Baby Spades) during the mid-1970s in the Bronx. The dance spread worldwide due to popularity in the media, especially in regions such as Canada, France, Germany, Japan, Russia, South Korea and the United Kingdom. While diverse in the amount of variation available in the dance, b-boying consists of four kinds of movement: toprock, downrock, power moves, and freezes. B-boying is typically danced to hip-hop, funk music, and especially breakbeats, although modern trends allow for much wider varieties of music along certain ranges of tempo and beat patterns. A practitioner of this dance is called a b-boy, b-girl, or breaker. Although the term “breakdance” is frequently used to refer to the dance in popular culture and in the mainstream entertainment industry, “b-boying” and “breaking” are the original terms. These terms are preferred by the majority of the pioneers and most notable practitioners.