VIDEO: More than 100 firefighters battled a fire at a building in the Bronx that's known by many as the birthplace of hip-hop. It started just after 7 a.m. Tuesday inside a 7th-floor apartment at 1520 Sedgwick Avenue in Morris Heights. According to firefighters, clutter slowed them down as flames spread to the 8th floor. A woman and 2-year-old child got out safely. One firefighter had a minor injury. The cause of the fire is under investigation. The building is known for being the site where DJ Kool Herc, known as a founding father of hip-hop, made his debut at a party in 1973.