Dr Susan Rogers is a sound engineer and record producer best known for being Prince’s studio engineer during his commercial peak - think Purple Rain, Parade, Sign O' The Times. She is also the author of "This is What It Sounds Like: What the Music You Love Says About You" - a book which will make you think about why you love the music you love. It's also a book which will make you love music you either didn't think you'd love, or didn't even know existed. Chris and Alex talk to Susan about Prince, Miles Davis, Paul McCartney and loads more.