The Roseland State Ballroom in Bos ton’s Back Bay, just down the street from Symphony Hall, was jumping last week. It was jumping higher than Bostomans had seen in a long while. Cause: the mambo a ...

The South Bronx has transformed musically over the past 60 years. Once, it was once a hot bed of Latin jazz. Decades later, it became the birthplace of the "scratch" and home to hip-hop's pioneers.