From down in Sao Paolo, then way up north and across to Spanish Harlem, then down a bit to Cuba, La Lista looks at some of the key tracks in the development of Latin jazz. Equally soothing, then franti …

What makes Katy Perry tick? We can't claim to know the answer, but we've been happy to watch the eccentric pop phenomenon rise up and over the top. For our Celebrity Playlist Podcast, we talked to Ms.  …