 Coming up on The Arts Hour with me, Nikki Bady, joint frontman of U.S. band The Roots and Oscar-winning documentary maker Questlove on the long history of hip-hop. African-American music, it's always had a rebellious hip-hop stance. The first 10 years of gospel music were how to escape the slave plantation. We complain about gangster rap in the 80s and 90s, jazz music in the 40s and 50s, and with Gil Scott Heron and the Last Poets and the Watts Prophets.