Beginning with DJ Kool Herc, Bronx-based DJs would take the rhythmic breakdown sections (also known as the "breaks") of dance records and prolong them by looping them successively. The breakbeat provided a rhythmic base that allowed dancers to display their improvisational skills during the duration of the break. This led to the first battles – turn-based dance competitions between two individuals or dance crews judged with respect to creativity, skill, and musicality. These battles occurred in cyphers – circles of people gathered around the breakers. Though at its inception the earliest b-boys were "close to 90 percent African-American", dance crews such as "SalSoul" and "Rockwell Association" were populated almost entirely by Latino Americans.