Miles Davis, Marvin Gaye and Aretha Franklin all recorded at United Sound Systems in Detroit. The 1916 brick building that houses the studio was designated a historic landmark in 2015, but local preservationists are worried that may not be enough to protect it forever. Michelle Jahra McKinney of the Detroit Sound Conservancy joins us. And, journalist Karen Cheung talks about her book "The Impossible City: A Hong Kong Memoir" and reflects on growing up in Hong Kong following the handover from Britain in 1997.