When Randall Goosby signed to Decca Classics, his forthcoming first album was described as being a 'journey across more than a century of African-American music for violin, tracing its roots in the spiritual through to the present day'. That fascinating and personal project - called Roots - is released today, and to explore its themes - as well as the music of composers including William Grant Still, Florence Price and Xavier Foley - the young virtuoso joined Editor Martin Cullingford in this week's Gramophone Podcast.